Clark Kent can't do anything against me now! I'll prove to the world that I'm a greater Superman now than before, when Kent's personality was part of me! 
- — Superman
Action Comics #293 is an issue of the series Action Comics (Volume 1) with a cover date of October, 1962.
Synopsis for Superman: "The Feud Between Superman and Clark Kent!"
Red Kryptonite splits the Man of Steel into two beings--an arrogant Superman and a non-powered Clark Kent -- and, if 72 hours passes without them merging, they will stay apart forever.
Appearing in Superman: "The Feud Between Superman and Clark Kent!"
Featured Characters:
Supporting Characters:
- Krypto
- Lois Lane
- Perry White
- Supergirl / Linda Lee Danvers (Flashback and main story)
Antagonists:
- Red Kryptonite Superman Duplicate (Single appearance)
Other Characters:
- Jor-El (statue)
- Lara Lor-Van (statue)
- Superman Emergency Squad (Mentioned only)
- Superman Robots (Mentioned only)
- United Nations (unnamed members)
- U.S. Navy (frogmen)
- Yogi Berra (Mentioned only)
Locations:
- Fortress of Solitude
- Metropolis
- New York City
- Phantom Zone
- U.S. Naval Base (unspecified)
Items:
Vehicles:
Synopsis for Supergirl: "The Secret Origin of Supergirl's Super-Horse!"
Supergirl learns that Comet has telepathic powers, by which he tells her of his origin. He was once Biron the Centaur in ancient Greece, and saved the sorceress Circe from an enemy sorcerer, Maldor. For this she gave him a potion intended to give him full humanity, but Maldor switched her potions and caused Biron to become all-horse instead. To make up for her mistake, Circe fed Biron (now Comet) another potion which gave him the speed, invulnerability, strength, immortality and telepathic power of the Greek gods. But, to complete his revenge, Maldor and his mentor cast a spell to exile Comet to the constellation Sagittarius forever. The rocket that sent Supergirl to Earth passed near the asteroid where Comet was imprisoned, shattered its force-field with repeller rays, and freed Comet. Later, after performing rodeo stunts with Linda Danvers, Comet helps Supergirl and Superman overcome alien invaders. Back at the ranch, Linda discovers that Comet has been sold to an animal trainer from Hollywood who intends to make him a sensation in Westerns.
Appearing in Supergirl: "The Secret Origin of Supergirl's Super-Horse!"
Featured Characters:
- Supergirl (Flashback and main story)
Supporting Characters:
- Comet, the Super-Horse (Flashback and main story) (Origin)
- Edna Danvers
- Fred Danvers
- Superman
Antagonists:
- Maldor (Flashback only)
Other Characters:
- Athena (Mentioned only)
- Circe (Flashback only)
- Horses (Flashback and main story)
- Jove (Mentioned only)
- Krypto
- Mercury (Mentioned only)
- Neptune (Mentioned only)
- Streaky
- Matt Carver
- Mace Greede
Locations:
- Greece (Flashback only)
- Aeaea (Flashback only)
- United States of America
- Hollywood (Mentioned only)
- Sierras
- Supergirl Dude Ranch
Items:
Vehicles:
- Kryptonian Rocket (Flashback only)