"Superman/Batman: "The Jekyll-Hyde Heroes"": Dr. Arron is a criminal scientist, who performs unethical experiments on human beings. When he is stopped by Batman and Superman, he vows to get his revenge against the World's Mightiest Heroes. A sho

World's Finest #173 is an issue of the series World's Finest (Volume 1) with a cover date of February, 1968.

Appearing in Superman/Batman: "The Jekyll-Hyde Heroes"

Featured Characters:

Supporting Characters:


  • Dr. Arron (Single appearance)
  • Kralik (Flashback only)

Other Characters:




Synopsis for Superman/Batman: "The Jekyll-Hyde Heroes"

Dr. Arron is a criminal scientist, who performs unethical experiments on human beings. When he is stopped by Batman and Superman, he vows to get his revenge against the World's Mightiest Heroes. A short time later, Arron escapes from prison and he learns that the heroes' most feared enemies are Two-Face and Kralik. With this information, Arron perfects a formula that turns Batman and Superman into their most feared foes, and so they start a series of fantastic crimes until they reach Arron's laboratory. The two transformed heroes seek to eliminate each other using Arron's equipment, but they are eventually stopped by Arron, who was exposed to his own formula by Robin and thus, he has transformed into a being similar to the Composite Superman, with one half like Superman and the other half like Batman.

When Batman and Superman return to their normal state, they learn that Arron's transformation will incapacitate him mentally and he won't be a future threat to society.

Appearing in Superman: "The Super-Key to Fort Superman"

Featured Characters:

Supporting Characters:

Other Characters:

  • Professor Welkins (Single appearance) (a scientist)



Synopsis for Superman: "The Super-Key to Fort Superman"

This story is reprinted from Action Comics #241.

Whenever he needs to get away from the day-to-day acts of heroism, Superman retreats to his hidden Arctic Fortress of Solitude. Access to the Fortress is gained by way of a giant metal key – a key so heavy, that only Superman could ever hope to lift it. Inside his fortress are vaults and trophy rooms devoted to his various exploits. He has a room in honor of Jimmy Olsen, one in honor of Lois Lane, one in honor of his close friend, Batman, and even a room dedicated to star reporter, Clark Kent.

One day, Superman visits a scientist named Professor Welkins, who asks the Man of Steel to test out the durability of a new metal compound he has been developing. Superman takes the compound back to his fortress and tests its breaking point. While there, he finds an ominous message written on the wall. Someone has managed to break into the Fortress of Solitude. The message taunts Superman, daring him to discover the intruder's true identity. In order to secure the Fortress from future break-ins, Superman welds the keyhole shut with a blast of heat vision.

Superman flies off to put out a fire in Metropolis, but when he returns he finds a second mysterious message. Someone has found yet another way to invade his sanctum. Unable to piece the puzzle together any further, Superman retires to one of his fortress's laboratories where (enclosed with lead) he begins experimenting on a piece of Green Kryptonite.

The intruder is still present however and soon makes his appearances known. It is Batman! As Batman leaps out and admits to leaving the vague messages, a cave-in erupts sealing the Man of Steel and the Dark Knight Detective inside of an enclosed cavern. Trapped inside with them is a deadly piece of Kryptonite. Superman is too weak to burst through the cave walls to generate an escape. As Batman begins to panic, Superman stands up, and reveals that the cave-in was actually a carefully staged ruse designed to flush him out. Batman tells Superman that in honor of the anniversary of Superman's arrival on Earth, he wanted to provide him with a fun, challenging game. He reveals that he managed to break into the Fortress by creating a secret stowaway panel inside the pointed tip of the giant key.

The two go to the Batcave in Gotham City, where Batman has personally cooked a giant Anniversary cake for Superman. The cake is decorated with extra-large candles molded in the shape of Superman and Batman.


  • No special notes.


  • No trivia.

See Also

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Links and References

Superboy Vol 4 69
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