Centuries ago on the planet Ma'aleca'andra, the Green Martians known as M'yrnn and Sha'sheen gave birth to twin sons. The bearing of twins was uncommon among the Martian culture, and as such, the first of the twins was named J'onn J'onzz, whose name means "Light to the Light." J'onn's brother, however, was born a mutant, bereft of a Martian's innate ability to communicate telepathically. He was named Ma'alefa'ak, whose name means "Darkness in the Heart."
As an adult, J'onn became a Manhunter (police officer) and married a Martian woman named M'yri'ah. The two established a modest home for themselves beneath the windswept Martian plains and gave birth to a daughter named K'hym.
Years passed, and J'onn's brother Ma'alefa'ak grew to despise everything about Martian culture. In an ambitious endeavor to commit full-scale genocide against his own people, he engineered a contagious virus known as H'ronmeer's Curse. The virus reacted to telepathic energy and carried from one Martian to the next whenever they elected to use their psionic powers. The plague responded to a Martian's innate fear of fire, causing them psychosomatic stress so intense, that their bodies and minds would literally burst into flame. J'onn desperately tried to keep his wife and daughter from using their mental gifts, but they were unable to do so, and thus ultimately contracted the virus. K'hym was the first to experience the symptoms, and M'yri'ah followed soon after. J'onn was anguished as he watched his family burning to death before his very eyes. The trauma of the event shattered his psyche, and nearly drove him mad.
Welcome to Earth
Meanwhile, on the planet Earth, a would-be scientist named Dr. Saul Erdel developed a transmitter machine based upon ancient Martian technology. Seeking to make contact with extraterrestrial life, he aimed his device towards the vicinity of Mars and activated it. The transmitter beam streaked across both space and time, striking the Martian Manhunter at a point in time several centuries before Erdel would even be born. The beam brought J'onn back to Erdel's natural time era, where he collapsed on the ground outside of the doctor's Colorado laboratory.
Erdel brought the distraught Martian inside and attempted to nurse him back to health. The anguish of J'onn's mental state created a psychic bond between the two, and Erdel became aware of the events that took place on Mars. In an effort to heal J'onn's mind, Erdel used the mental link to fabricate a new history for the Martian. He created a back-story inspired by the writings of famous science fiction novelists such as Ray Bradbury and Edgar Rice Burroughs. Eventually, J'onn's sanity was restored, and he was prepared to function in this strange, new world. Erdel put the idea into his head that he should become a great champion, and thus J'onn adopted the heroic guise of the Martian Manhunter.
When J'onn shapeshifted into a human-like form, Erdel was shocked and suffered a heart attack that killed him. As he was dying, Erdel asked J'onn for forgiveness for making him a prisoner of Earth.
It was later revealed that Mars was dead when J'onn was taken, killed by a mental plague deliberately started by his brother Ma'alefa'ak. He took the identity of the Bronze Wraith, and fought crime with the Justice Experience.
John Jones, Police Detective
J'onn was able to use his powers to fit into human society. He adopted a human appearance and called himself "John Jones." He became a police detective in the city of Middleton. For a long time, he worked as a policeman while secretly using his alien powers to solve cases and help people.
Some time later, the existence of the Martian Manhunter was accidentally revealed. From this point on, J'onn stopped hiding his superhero feats from the world, but he kept his double-identity as John Jones secret. It was at this time that he began to publicly appear in his green-skinned humanoid form.
J'onn's career as a police detective was ended by the Idol-Head of Diabolu. This evil statue expelled a deadly cloud. John Jones saved a child from the cloud, but in doing so he was engulfed by it. His fellow policemen believed he must have died. J'onn took this as an opportunity to abandon his double life. He allowed the police department (even Diane Meade) to believe he had died, and as the Martian Manhunter he even attended his own funeral.
Martian Manhunter Without John Jones; Justice League of America
After this, J'onn J'onzz and Zook began a quest to combat the Idol Head of Diabolu, which they finally managed to destroy.
J'onn served as a regular member of the Justice League of America. When the original Justice League of America disbanded, J'onn became the leader of the new "Justice League Detroit". He remained with that team until it, too, disbanded.
Justice League International
J'onzz revealed that his familiar appearance is not his true Martian form but a "compromise" between his true form and a human appearance - explaining that his real form is private and that, even on Mars, his "public" appearance was the familiar version.
In addition to serving in the League under his own identity, he also joined (under duress) as "Bloodwynd."
The Martian Manhunter is the most recognized hero in the Southern Hemisphere, and he maintains a number of different secret identities, many of them outside the United States. However, following two incidents (in which John Jones separates from the Martian Manhunter), he decides to focus on his original human identity and retire the others.
Later, the Martian Manhunter attempts to conquer his fear of fire and makes a deal with a flame-wielding villainess named Scorch, who wants J'onzz' telepathic help in dealing with her own mental issues. 20,000 years before, an extremely dangerous race of beings called "the Burning" caused large fires to help themselves reproduce asexually. In order to prevent the Burning from destroying much of the universe, the Guardians of the Universe split the species into the Green Martians and the White Martians, changed their reproductive behavior, and instilled in them a fear of fire. When the Martian Manhunter confronts his fear of fire, he reverts into one of the ancient creatures and changes his name to Fernus. His genetic memory identifies threats such as Vandal Savage, who killed one of the Burning on ancient Earth. This same genetic memory also makes Fernus hate the Green Lantern, due to his association with the Oans.
Fernus increases the strength of the powers he inherits from J'onn: For example, he can phase other beings rather than just himself, and he has access to pyrokinesis. He can breathe fire of such intensity that it harms Scorch, who had previously been thought immune to damage from fire. Fernus' tremendous strength also allows him to dominate the Justice League in combat even without his Martian telepathic powers. He can also heal himself from almost total destruction within seconds.
The Justice League eventually defeats Fernus by re-enlisting Plastic Man, who is immune to Fernus' psychic powers and has superior shape-changing abilities. It is implied that Batman recruited Plastic Man to the Justice League as a balance in case the Martian Manhunter ever got out of control.
After destroying Fernus, J'onn grieves for Scorch, who had fallen into a coma, and with whom he had fallen in love. J'onn later tells Superman that his aversion to fire has changed: he is now invulnerable to flames unless they are "flames of passion" or of some other "psychic significance."
Infinite Crisis and "One Year Later"
Although J'onzz is initially thought killed in the explosion of the Justice League Watchtower, Justice League member Manitou Dawn receives a telepathic vision of J'onzz assuring her that he "will reveal himself in time," but needs her help to keep an eye on a mysterious, newly-powerful telepath - the mind-controlling villain, Key - whose abilities he had always managed to dampen before.
J'onzz resurfaces during Infinite Crisis, unconscious and connected to Alexander Luthor, Jr.'s vibrational tower, along with Lady Quark, the Ray, Black Adam, Power Girl, Nightshade, and Breach. Wonder Girl, Superboy, and Nightwing free J'onzz and the others from Alexander's tower.
Oracle asks J'onzz to telepathically coordinate the heroes' response to the Society's global jailbreak. He joins the assembled heroes in the defense of Metropolis from the combined might of the world's super-villains and in the battle against Superboy-Prime.
In the following months, J'onn masqueraded as U.S. Secretary of State Kakalios in an attempt to bring down Checkmate. He was successful in eliminating it as a U.S. government-controlled agency. However, it soon reorganized under the United Nations.
One of the most dramatic changes in J'onn's life occurred a short time later. While operating under the guise of William Dyer, he discovered that several Green Martians had crash-landed on Earth, and were being held by high-ranking members of the Defense Department. One of the Martians, Roh'kar, broke free of his confinement and made contact with the Martian Manhunter. The union was bittersweet, however, as a brainwashed assassin ended Roh'kar's life with a weapon designed to target Martians. J'onn found five of Roh'kar's colleagues and rescued them from the bowels of a government think tank. He established a safe house for them and pledged to do everything in his power to keep them safe from government scrutiny.
Salvation Run and Final Crisis
When Checkmate decided to capture a number of super-villains and exile them on a "prison planet" in an event known as Salvation Run, J'onn volunteered to disguise himself as Blockbuster and infiltrate the planet to keep an eye on things, making periodic reports to Batman. Catwoman finds out his true identity and, to save her own skin, outs him to the other villains, who torture him. When the villains escape the planet, teleporting back to Earth, they leave J'onn in his cage to die.
He is "rescued" by Libra and the new Secret Society of Super-Villains who open a Boom Tube between the planet and Earth. Libra brings him back to Earth with the express purpose of killing him, doing so with his spear tipped scale staff, for the Human Flame to show the Society members that he can give them their hearts desire—Human Flame having wanted J'onn dead for foiling a crime of his years ago. In his final moments J'onn broadcast a telepathic message to fellow heroes Batman, Superman, Green Lantern Hal Jordan, Gypsy, and Black Canary prompting them to say his name and, hours after his death had been discovered, simultaneously record part of his life story in their sleep.
His remains were interred in a pyramid removed from Egypt and placed back in its original location on Mars in a ceremony attended by many heroes. He was eulogized by Superman.
The Blackest Night
During the events of the Blackest Night, the dead rose across the universe and J'onn was one of them. After his resurrection and admission to the Black Lantern Corps, he went to confront Barry Allen and Hal Jordan, who were talking over Batman's grave being robbed. He approaches them saying that they should be dead and begins to fight the two, and is soon joined by Black Lanterns Elongated Man, Sue Dibny, Firestorm, Hawkman, and Hawkgirl. When the Atom arrives, Barry and Hal create a fire tornado to destroy J'onn. This fails to stop him, and the heroes are cornered until Indigo-1 and another Indigo Lantern arrive to drive them off. At the end of the Blackest Night, J'onn is revived by the Entity along with other heroes and a few villains. When Superman asks if J'onn is truly alive, J'onn responds, "It appears so."
J'onn is a very prominent member, finding a water source on Mars and seen talking with the daughter of Doctor Erdel. J'onn was seen last tucking her into bed in a retirement home, in the form of her father. J'onn then visited the doctor's laboratory, but plant life around him starts to die every time he gets near. He later went to see M'gann M'orzz in Australia during her mediation search, but found her beaten and tied up. While tending to her, he is contacted by the Entity, who instructs him to burn down the newly-formed forest. When J'onn's asks M'gann who did this to her, M'gann says she was attacked by a female green Martian. J'onn presumes the forest he is to burn down is in Star City but is questioned by Green Arrow. He attempts to burn down the forest before being telepathically attacked by the Entity. The Entity reveals to him that the newly-formed forest he is to burn down is on Mars. After J'onn lashed out the Star City's forest, he starts to return home.
When J'onn enters his home, he is confronted by a female green Martian named D'Kay D'Razz, who is the one responsible for M'gann's attack. D'kay explains her origins and wants to be his mate. J'onn refuses, learning she is a psychopath when D'kay angrily lashes out to attack and enters his mind. J'onn tries to resist influence from D'kay's mind, but her control over his mind tempts him with visions of a fantasy world where all the Martians and J'onn's family are resurrected by the Entity. While reunited with his lost family, J'onn discovers that they are false and realizes that they are a ruse and the death corpse is carved of Martian symbols of love and hate from D'kay's influence. J'onn arrives vengeful and wrings D'kay's neck in disgust. J'onn defeats D'kay by forcing her into the sun but is saved from the same fate by the White Lantern Entity, who informs him that his mission has been accomplished, and returns his life to him. The Entity then told J'onn to choose between Mars and Earth. J'onn chose Earth and returned only to be absorbed into the Earth by the Entity and Deadman as "part of the plan."
When the "Dark Avatar," made his presence known, Martian Manhunter is revealed to be one of the four Elementals, the others being Aquaman, Firestorm, Hawkman and Hawkgirl. He becomes the element of Earth to protect the Star City forest from the "Dark Avatar," which appears to be the Black Lantern version of Swamp Thing. The Elementals are then fused with the body of Alec Holland in order for him to be transformed by the Entity into the new Swamp Thing and battle against the Dark Avatar. After the Dark Avatar is defeated, Swamp Thing brought Martian Manhunter and the other Elementals back to normal. Afterward, J'onn helps Melissa Erdel and removes the piece of machinery from her head that made her lose her mind.
Like all Martians, J'onn has a somewhat cold and stoic demeanor. He has very restricted emotional expressions. J'onn typically acts as the voice of reason in the Justice League and is one of the wisest leaders within the hero community, along with Batman and Superman.
Despite his cold exterior, J'onn is one of the kindest and most noble heroes operating on earth. The Manhunter has demonstrated enormous willpower, as evidenced by his ability to retain his sanity after the death of his race. He has a subtle sense of humor and an affinity for the chocolate cookie sandwiches Chocos. The Martian Manhunter is considered by many to be the heart and soul of the Justice League.
He has spent decades living among humans and investigating the whole scope of human life. Although his primary human identity is John Jones of Denver, he has several aliases around the world that he uses. He even spent several months in the shape of a gorilla, living among them to learn about Earth.
- Martian Physiology: Martian Manhunter has been described as "the Swiss Army knife of superheroes." He possesses many of the powers of Superman. Note: Many, if not all of the Martian Manhunter's powers and abilities are common to members of his race, even if demonstration of such abilities has not been explicitly shown in a canonical resource. His powers come from his alien physiology. Born on Mars over a millennium ago, from a super advanced civilization, boasting advanced technology and genetic modifications over its people, the Martian Manhunter would appear to be a genetically modified being with incredible powers stemming from the changes made in his body. Whether this is their natural state or an advanced state given to only a few individuals is unknown. The Martian's physiology would seem to be composed of a complex molecular chain that resembles polymer bonds but with the ability to be altered at will. The Martian Manhunter can change his mass, color, relative shape, imitating even clothing if desired. The biopolymer is extremely flexible, durable, incredibly strong for a biological material and apparently self-sustaining. It is unknown if the Martian Manhunter actually needs to eat or not but he has been seen consuming food, particularly "Chocos," a brand of cookies.
- Shape-Shifting, Malleability, Plasticity, Elongation: Arguably one of the most incredible powers possessed by the Manhunter is the ability to shape-shift. He is able to literally control the molecular structure of his body's biopolymers and manipulate them into any construct he desires, in addition to and including his own body. He can form clothing and weapons with non-moving or non-functioning parts. There does not seem to be any limit to the number of people the Manhunter can imitate and has stood in as a double for many famous people. His ability to imitate people and their mannerisms has stood him in good stead for his disguises. He has recently been seen to shape-shift into the size and shape of a common house fly  and to enormous sizes comparable to skyscrapers.
- Invisibility: The Manhunter can cause the biopolymers in his body to lose their ability to reflect light, rendering the Manhunter invisible to normal light and human sight. With more increased concentration, he can render himself completely invisible along the electromagnetic spectrum, including the infrared and the ultraviolet ranges of the spectrum. This invisibility does not affect every other sense and he could still be detected by touch.
- Phasing: The Manhunter can phase through solid matter. No explanation of this power has been given, but it might possibly be an aspect of his psionic powers, perhaps shifting his mass into another dimension or out of vibrational phase with other objects in this dimension. Since it is known that he can alter the density of his biopolymers, it may be that he can simply become less substantial than solid matter, thereby decreasing the molecular density of his body by loosening the bonds within the biopolymers, due to - and further demonstrating - the absolute control he has over them.
- Superhuman Durability: The biomorphic structure of the Manhunter's body allows him to absorb almost all kinetic energies such as high caliber bullets, shrapnel, or flying debris easily. He can harden his biopolymers by rebinding them and increase his durability to the point where he is nearly on par with Superman. Along with his nigh-invulnerability, his shape shifting makes him even more difficult to harm. Hazardous environments practically do not affect the Martian Manhunter.
- Toxic Immunity: In addition, Martian Manhunter's immune system protects him from all toxins and diseases (meaning he is unable to succumb to any earthly poison, disease or infection).
- Superhuman Strength: The Martian Manhunter is one of the strongest beings on the planet. The Martian's superhuman strength comes from his Biomorphic structure formed from immensely long and complex molecular chains, augmented with his psionic and telekinetic abilities allowing him to lift incredible weights without these weights crumbling under the stress. The Martian has been seen lifting tankers out of the ocean for vast distances, stalemating powerhouses like Superman, and he has even helped tow the moon and objects as large as the Earth itself together with Superman. J'onn's strength is great enough to the point that he has drawn blood from beings as durable as Kryptonians such as Supergirl by his punches alone. By modifying the density of these biopolymers, the Manhunter can make himself stronger by forcing them into tighter bundles. While at a resting state the limits of his strength are unknown, the Manhunter can lift 100 tons without much effort. He is nearly as strong as the likes of Superman when concentrating his biopolymers to their full capacity.
- Superhuman Stamina: J'onn's endurance is just as formidable as his strength and invulnerability. He can operate under extreme conditions for an indeterminate period of time without showing signs of fatigue. The exact range of this power is unknown.
- Regeneration: The Martian Manhunter has shown amazing regenerative capabilities. So great are they that he has been able to completely regenerate from nothing but his severed hand, regenerate in moments from nothing more than a puddle of green liquid, and in another instance, survived beheading.
- Flight: The Martian Manhunter flies by manipulation of gravitons (a subatomic particle associated with the force of gravity), manipulation of magnetic fields and control of his absolute molecular movement (a telekinetic effect). These combine to give him the ability to fly great distances with little fatigue and at great speed. The Manhunter has also been seen flying in space with no difficulty, and in space he can fly at speeds that have allowed him to keep up with the likes of even Superman. J'onn can therefore fly at speeds exceeding the escape velocity of earth (7 miles per second) under his own power.
- Superhuman Speed: Either through flight or natural movement, the Martian Manhunter can maintain speed and demonstrates reflexes far in excess to that of most metahumans, and for far longer. Like the power of flight, this is accomplished by manipulating the magnetic fields of energy surrounding his body, as well as ambient gravitational particles. Traditionally, J'onn only uses his superhuman speed while flying. He has admitted that he is not as fast as Superman but this can be argued as he has shown speed feats that are nearly at Superman's level, such as the speed necessary to fly around the earth destroying multiple targets around the planet in seconds, while also managing to save Kyle Rayner in the end. He can process thoughts, move, and react at super speed as well. J'onn has also demonstrated that he is fast enough to comfortably catch bullets and other exceedingly fast projectiles.
- Extrasensory Input: J'onn possesses nine different senses. One of these senses could account for instances of the Manhunter's perceived precognitive abilities.
- Super Hearing
- Super-Breath: The inner valves and chambers inside the Martian Manhunter's air canals are very dense and greatly enhanced, allowing him to, much like Superman, create strong hurricane force winds just by exhaling pressurized air from his lungs in an incredibly strong burst.
- Enhanced Senses
- Martian Vision: The actual nature of this power seems to vary depending on the reports. It has been seen to be a bolt of force, directed by the Manhunter's eyes causing considerable damage. It has also been seen to cause flammable objects to catch fire. It also grants J'onn the ability to see into other spectrums of light. J'onn can use his Martian vision to see people and objects that are invisible to others. For example, upon their first meeting, J'onn's power allowed him to see past Gypsy's metahuman camouflage ability; other effects are, at present, unknown.
- Telepathy: The Martian Manhunter is the most powerful telepath on the planet, and is one of the strongest telepathic beings in the Universe. He is able to read the mind of any human with no difficulties, and the only minds that can cause him trouble are insane minds. He can even read the subconscious mind as well. He is able to read minds over great distances and has been known to scan the mind of every person on Earth within a matter of moments. This telepathy extends to distances as far away as the moon, since it is known that the Martian Manhunter can telepathically communicate with someone on Earth while on the moon. It is not known whether there is any limit to the number of people he can be attuned to or whether there are any special requirements to being attuned to him. In addition to reading minds, the Martian Manhunter has a multitude of other telepathic capabilities, one of which allows him to literally reprogram the mind of a subject into believing whatever he wants them to. He can use this ability to help subjects forget things that he does not want them to remember as well as set up post-hypnotic suggestions.
- Illusions
- Possession
- Astral Projection
- Mind Control: The Martian Manhunter can also control other beings mind's. Insane minds seem to be the only minds he has some trouble controlling.
- Telepathic Relay: Otherwise known as a telepathic link. As a Class 3 telepath, the Manhunter is able to use his telepathic prowess as a relay station for a group of minds, who can then "speak" to each other through him. This relaying ability seems to be limited to the same range as the Manhunter's normal telepathic range.
- Telepathic Assault: The Martian Manhunter can also use his telepathic abilities in an offensive manner. He has the ability to cause mental shutdown in a target using his psionic powers. The Manhunter does not use this power often due to the invasive nature and harshness of such a telepathic attack.
- Thought Sensing: The Manhunter can use the mental signature of a being to track it, and can detect life forms by their empathic as well as telepathic signatures. He can detect whether a being is intelligent or not, and can communicate with it empathically if it does not have a communication-driven frame of reference with which normal telepathy may function. He can also detect various states of mind from anywhere in the world.
- Mayavana (Formerly): One of the most prized abilities of the Martians is Mayavana. It is the ability to reach into another mind and create a mental reality as real as any normal reality. The strain of Mayavana is such that it can only be used once in a lifetime, and so is normally used on the one that a Martian loves the most. J'onn used it on the rampaging Despero so that he thought that he had destroyed the JLH (subsequently he reverted to an embryonic state) and therefore saved his friends.
- Telekinesis: J'onn possesses the ability to move objects with his mind, which he described as ""molecular hypnosis" and "Martian mind-over-matter".
- Matter Absorption: J'onn has the ability to absorb matter and add it to his own mass, he once used this ability to grow to the size of the gigantic Antares and in another occasion to enhance his regenerative abilities.
- Genius Level Intellect: The Martian Manhunter possesses highly advanced reasoning and logic capabilities, and uses them to great effect. Despero once claimed that Ted Kord's mind (IQ 192) was second only to that of J'onn J'onzz. The Martian Manhunter's particularly astute reasoning capabilities and long-term association with Earth's global population gives him an edge in dealing with humans of diverse governments, cultures and religions. As a result, in the northern hemisphere of Earth, the Manhunter is one of many costumed adventurers battling against entropy, yet in the southern hemisphere, he is more well-known than even Superman.
- Weaponry: Is skilled in the use of a trident.
- Multilingualism: The Martian Manhunter is able to speak several languages, those include: Martian, English, Portuguese, Japanese, Russian, Italian.
- Meditation: Martians enter a meditative state as a form of sleep.
- Vulnerability to Fire: The Martian Manhunter has a psychosomatic fear of fire. The Guardians of the Universe have built in a fear of fire when they first confronted the Burned (Martians). Exposure to fire, causes him to lose his powers, and in the case of extreme fire, to lose his control over his biomorphic form. The Manhunter is more vulnerable in this form and can take damage in this vulnerable state.
- Chocoholism: It has also been suggested that something within J'onn's physiology makes him addicted to the chemicals used in the Earth snack, Chocos. Withdrawal symptoms include violent bursts of rage and loss of intellect. However, these claims have never been accurately substantiated, and may even be false.
- Kuru pendant: The Martian Manhunter owns one of two Kuru pendants. The pendant acts as a repository of ancient Martian lore and knowledge. The second pendant belonged to the late Martian, Roh'kar. J'onn is also known to carry a bag of Chocos with him for snacking. During the Justice League International years, J'onn is shown to be obsessed with Chocos, partially due to Captain Marvel's influence.
- J'onn J'onzz first appeared in Pre-Crisis Earth-One continuity in Detective Comics #225 by Joseph Samachson and Joe Certa. The Post-Crisis New Earth version first appeared in Justice League of America #255 by Gerry Conway, J.M. DeMatteis and Luke McDonnell.
- Although obviously alien in appearance, the form that most Earthlings associated with the Martian Manhunter is not actually his true form. In his natural state of being, J'onn has a slender body, with sharp, angular features and a tapered cranium. The more muscular "beetle-brow" appearance was inspired by Saul Erdel, who convinced J'onn to assume a form derived from the literary works of science fiction authors such as Edgar Rice Burroughs and Ray Bradbury.
- In Earth-One continuity, the Martian Manhunter quit his tenure with the Justice League of America in Justice League of America #71 and did not officially return to active status until the reformation of the League in Justice League of America Annual #2. However, Post-Crisis continuity has retroactively re-inserted J'onn as an active League member for the entire span of the first iteration of the JLA.
- Batman left one Choco on his casket.
- Martian Manhunter had Superman as one his civics students when he taught in high school, even though he did it to keep an eye on young Clark Kent.
This section contains a list of alternate identities that the Martian Manhunter has used during his time on Earth (incomplete).
- Bloodwynd 
- Bronze Wraith 
- Charley Dimes 
- Isobel de la Rosa: Renowned subversive author from Montevideo.
- Jade Warrior 
- Joan J'onnz 
- John Jones 
- Marco Xavier 
- Secretary of State Kakalios
- William Dyer 
- Yuchiro Takata 
- Hino Rei
- Goldie Johnson: Star reporter for The World Register tabloid newspaper in Chicago.
- Josh Johnstone 
- Mrs. Klingman, high school civics teacher of Clark Kent 
- a cat
- Nathaniel Mackelvany 
- Paris Jackson
- Officer Mike Sherman
- Officer Perez
- Lora Denton 
- In his earliest appearances from 1955 to 1959, the Martian Manhunter was drawn completely hairless, with a beetle-brow forehead and shaded eyes. But throughout most of the Silver Age, he was drawn less as an alien and more as a human with green skin, with standard human eyes and dark eyebrows. This humanized look lasted for several years, until the late 1970s when he returned to his original beetle-brow appearance.
- In some of his earliest adventures, the Martian Manhunter possessed the ability to see into the near future. However, there have been scant examples of this, and it is no longer a power that he possesses in modern continuity. By his own account, the Martian Manhunter cannot perceive the future.
- In Pre-Crisis, when a group of evil Martians led by General Blanx destroyed the surface of Mars, forcing all the good Martians to flee in a rocket, J'onn accompanied them into space, leaving the Justice League. This pre-Crisis story does not depict the inhabitants of Mars in a manner consistent with how they would be portrayed post-Crisis.
- Martian Manhunter (Volume 1)
- Martian Manhunter: American Secrets (Volume 1)
- Martian Manhunter (Volume 2)
- Martian Manhunter (Volume 3)
- JLA: Trial by Fire
- Appearances of J'onn J'onzz (New Earth)
- Images featuring J'onn J'onzz (New Earth)
- Quotations by or about J'onn J'onzz (New Earth)
- Character Gallery: J'onn J'onzz (New Earth)
- ↑ Trinity #38
- ↑ 2.0 2.1 2.2 Detective Comics #225
- ↑ 3.0 3.1 Chase #6
- ↑ Detective Comics #273
- ↑ Detective Comics #275
- ↑ Detective Comics #311
- ↑ Secret Origins (Volume 2) #32
- ↑ Detective Comics #326. This was the end of the Martian Manhunter series in Detective Comics, which had lasted from #225 (November 1955) to #326 (April 1964). After this, the series moved to House of Mystery.
- ↑ House of Mystery #143-158
- ↑ House of Mystery #160-173
- ↑ Justice League of America Annual #2
- ↑ Justice League of America #261
- ↑ Justice League #1
- ↑ 14.0 14.1 Martian Manhunter (Volume 3) #1
- ↑ Blackest Night #2
- ↑ Blackest Night #3
- ↑ Blackest Night #8
- ↑ Brightest Day #2
- ↑ Brightest Day #6
- ↑ Brightest Day #7
- ↑ Brightest Day #8
- ↑ Brightest Day #9
- ↑ Brightest Day #21
- ↑ Brightest Day #24
- ↑ JLA Secret Files and Origins #1
- ↑ JLA: Foreign Bodies
- ↑ 27.0 27.1 JLA #89
- ↑ Green Lantern (Volume 4) #44
- ↑ 29.0 29.1 Martian Manhunter (Volume 2) #8
- ↑ Green Lantern (Volume 3) #44
- ↑ 31.0 31.1 Martian Manhunter #4
- ↑ 32.0 32.1 Detective Comics #226
- ↑ 33.0 33.1 33.2 Martian Manhunter (Volume 2) #2
- ↑ Martian Manhunter (Volume 2) #23
- ↑ Justice League America #39
- ↑ JLA 80-Page Giant #1
- ↑ Martian Manhunter (Volume 2) #28
- ↑ Martian Manhunter (Volume 2) #24
- ↑ Martian Manhunter (Volume 2) #20
- ↑ DC Comics Encyclopedia
- ↑ DC Comics Encyclopedia: Updated and Expanded
- ↑ Justice League Spectacular #1
- ↑ Martian Manhunter (Volume 2) #1
- ↑ Martian Manhunter (Volume 2) #10
- ↑ Justice League Task Force #7
- ↑ House of Mystery #160
- ↑ JLA #27
- ↑ Martian Manhunter (Volume 2) #26
- ↑ 49.0 49.1 Martian Manhunter (Volume 2) #20
- ↑ President Luthor Secret Files and Origins #1
- ↑ JLA: Year One #1
- ↑ Justice League of America #71
|Justice League member|
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