Only this antidote can restore your lost super-powers and make you Superboy again, Kal-El! But watch me as I smash it! Ha, Ha! 
Superboy #121 is an issue of the series Superboy (Volume 1) with a cover date of June, 1965.
Contents
Synopsis for "Clark Kent's Single Identity!"
The Phantom Zone villains cause Superboy to lose his powers through an exposure to Red and Green Kryptonite. When they bargain for their release in return for Professor Vakox restoring Superboy's powers, he releases only Vakox. Threatened with Green Kryptonite, Vakox is forced to concoct the antidote. After Superboy's powers are restored, he sends Vakox back to the Zone.
Appearing in "Clark Kent's Single Identity!"
Featured Characters:
- Superboy (Flashback and main story) (as an infant)
Supporting Characters:
- Krypto (Cameo)
- Martha Kent
- Jonathan Kent
- Lana Lang
- Chief Parker
- Jor-El (Cameo) (Flashback only)
- Lara Lor-Van (Cameo) (Flashback only)
Antagonists:
- Two Jewelry Store Robbers
- Four Bullies
- "Bugs" Wilson (Single appearance)
- "Monk" Lennox (Single appearance)
- Phantom Zoners
Other Characters:
- Citizens of Smallville
- Mayor
- Mayor's Wife
- Doctor
- Nurse
- Joe (Barber)
- Smallville High School
- Class
- Teacher
- Smallville Tigers
- Coach
- Three Superboy Robots
- Smallville Police Department
- Smallville Firemen
- Two Astronomers
Locations:
- Earth
- The Moon
- Smallville
- Kent Farm
- Basement
- Smallville High School
- Classroom
- Baseball Field
- Gymnasium
- Mayor's Residence
- Joe's Barber Shop
- Kent General Store
- Superboy Museum
- Police Headquarters
- Astronomical Observatory
- Kent Farm
- Krypton (Mentioned only)
- Phantom Zone
Items:
- Temporary Moon Rings (done by Superboy in honor of Smallville's anniversary)
- Red Kryptonite
- Green Kryptonite
- Red-Green Kryptonite Rays
- Superboy Scrapbook
- Meteor
- Luminous Paint
- Public Servant #1 Award
- Phantom Zone Projector
- Red-Green Kryptonite Antidote
Vehicles:
- Kryptonian Rocket (Mentioned only)
Synopsis for "Jor-El's Visit to Earth!"
The juvenile Jor-El is thrown through time and space by a comet's freak effect, ending up in Smallville in Superboy's time. When he learns the newcomer's identity, Superboy is flabbergasted to meet his own father, both after the latter's death but before a period when Jor-El had fathered Kal-El. After several adventures together, Superboy warns Jor-El about the catastrophic fate that awaits Krypton and makes a gift of what he thinks is Red Kryptonite to his future father as he returns to the past. Kal-El had accidentally given young Jor-El a sample of Amnesium, which wiped out any memory of his visit to the future.
Appearing in "Jor-El's Visit to Earth!"
Featured Characters:
Supporting Characters:
- Jonathan Kent (Cameo)
- Martha Kent (Cameo)
- Krypto (Cameo)
- Jor-El
- Lara Lor-Van (Mentioned only)
Antagonists:
- Lex Luthor
- Giant Sea Serpent
Other Characters:
- Phantom Zoners
- Blak-Du (Single appearance)
Locations:
- Krypton (Flashback only)
- Krypton College (Mentioned only)
- Earth
- Smallville
- Luthor's Laboratory
- Kent Farm
- Basement
- Lighthouse (Unnamed) (unknown location)
- Smallville
- Phantom Zone
Items:
- Comet
- Superboy Scrapbook
- Earthquake Gun (Destroyed)
- Superboy (Statue only) (Destroyed)
- Reform Ray
- Danger Alarm
- Green Kryptonite
- Red Kryptonite
- Phantom Zone Viewer
- Phantom Zone Projector
- Amnesium
Vehicles:
- Time-Stretch Globe
- Kryptonian Rocket (Mentioned only)
Concepts:
Notes
- The first story is two parts.
- Part I "Clark Kent's Single Identity!"
- Part II "The Stolen Super-Identity"
- The criminal "Bugs" Wilson claimed that he saw Clark Kent change over to Superboy.
- In "Jor-El's Visit to Earth!" Red Kryptonite turned a teenage Jor-El into an adult.
- "Jor-El's Visit to Earth!" was reprinted in Superboy: The Greatest Team-Up Stories Ever Told.
Trivia
- Jor-El's trip through time doesn't actually involve moving through space. Earth is at the location in space that Krypton was, 25 years prior.
- Superboy states that Superboy Robots are powered by Cosmic Rays.
- Blak-Du was Jor-El's roommate at Krypton College. They would go on to win an Invention Prize at the Science Fair.
See Also
