- I'm Ray Palmer. I can science my way out of anything.
- — Ray Palmer src
Raymond Palmer is a scientist, also known as The Atom, a superhero who can shrink with the help of the A.T.O.M. Exosuit of his own design. He initially came to Starling City to head Palmer Technologies before becoming a hero and ally of the Arrow, and later became one of the founding member of Legends.
Born in Ivy Town, Ray Palmer had a lonely childhood, though he got through it by immersing himself in Arthurian lore, fancying himself as "Sir Galahad" and naming his personal playground in the woods after the legendary Camelot. He was inspired to become an engineer and inventor after watching Star Wars as a child.
Sometime prior to the spring of 2014, Ray became engaged to Anna Loring. During Slade Wilson's siege on Starling City, both Ray and Anna were caught in the crossfire of Mirakuru-enhanced soldiers, resulting in his fiancée's death. Heartbroken by this loss, Ray promised himself that he would never again lose someone he loved and would find a way to save the city from ever having to face a similar danger again. Becoming the CEO of Palmer Technologies, previously known as Queen Consolidated, Palmer started developing a suit to be used to fight crime and also created a very successful smart-watch business.
Having designed a powerful exosuit, Ray began acting as a vigilante, calling himself The Atom. While testing out a new function of his exosuit, Ray accidentally caused an explosion which shrunk him to a miniature size; stuck in this state and unable to call for help, he was presumed dead. Not long after, using his prior wishes following his takeover of Queen Consolidated, Starling City was subsequently re-branded as "Star City" in honor of him saving the city from Ra's al Ghul's Alpha-Omega virus. Six months after his disappearance, Ray managed to contact Felicity but was captured by Damien Darhk for his technology. However, thanks to the efforts of Team Arrow, Ray was rescued and would continue to aid them in their fight against Darhk.
In early 2016, Ray was recruited by time-traveler Rip Hunter into an "elite team" on a mission to take down Vandal Savage. At one point in Ray's time-traveling adventures, he knighted Sir Raymond of the Palms, Defender of Camelot by Queen Guinevere in 507. Ray was later possessed by a powerful demon, Neron, after accidentally interfering in Nora Darhk and John Constantine's efforts to subdue the demon until Neron killed Nate Heywood (voiding the deal he made: sparing Nate in exchange for control of his body), allowing Constantine to kill Neron and grant Ray his body back.
Post-Crisis, Ray helped the Legends fight the Encores such as Damien Darhk, who gave his blessing for Ray to marry Nora. After getting married, Ray and Nora chose to leave the Legends and focus on Nora's job as a Fairy Godmother.
- Peak Human Condition
- Genius Level Intellect
- Hand-to-Hand Combat (Basic) 
- Indomitable Will
- A.T.O.M. Exosuit: Ray used an exosuit he designed himself. It was made out of dwarf star alloy, making it strong enough to withstand damage from bullets, arrows and explosions. A later discovery in the suit's technological applications, allowed it to miniaturize selected targets, especially its wearer.
- Captain Cold's Cold Gun (Formerly)
- This version of the character is exclusive to the continuity of the television series Arrow, its tie-in comic book series, and its related television series. It is an adaptation of Ray Palmer/Atom. The original character was created by Gardner Fox and Gil Kane and first appeared in Showcase #34.
- Ray Palmer is portrayed by Brandon Routh. A young Ray was portrayed by Jack Fisher in the episode "Phone Home".
- Palmer has been established as 8 years of age as of October 31, 1988. This would place his date of birth between early November 1979 and late October 1980.
- 113 Appearances of Raymond Palmer (Arrowverse)
- 8 Images featuring Raymond Palmer (Arrowverse)
- 7 Quotations by or about Raymond Palmer (Arrowverse)
- Character Gallery: Raymond Palmer (Arrowverse)
- "DC's Legends of Tomorrow (TV Series) Episode: Phone Home"
- "DC's Legends of Tomorrow (TV Series) Episode: Progeny"
- "DC's Legends of Tomorrow (TV Series) Episode: The Magnificent Eight"
- "DC's Legends of Tomorrow (TV Series) Episode: Compromised"
- "DC's Legends of Tomorrow (TV Series) Episode: The Chicago Way"
- "DC's Legends of Tomorrow (TV Series) Episode: Camelot/3000"
- "DC's Legends of Tomorrow (TV Series) Episode: Dancing Queen"
- "DC's Legends of Tomorrow (TV Series) Episode: Mr. Parker's Cul-De-Sac"
- "Suicidal Tendencies"
- "Broken Arrow"
- "Lost Souls"
- "Blood Ties"
- "Pilot, Part 1"