Pre-Crisis

First appearing in Superman #157 (Nov. 1962), Quex-Ul was a Kryptonian exiled to the Phantom Zone

Phantom Zone

The Phantom Zone is a fictional prison dimension featured in the Superman comic books and related media published by DC Comics. It first appeared in Adventure Comics #283 , and was created by Robert Bernstein and George Papp...

 when he was convicted of killing rondors, an endangered species, to use their healing horns for the purpose of profit. He confessed and spent his time in the Zone, but was released by Superman when his time was up. Not a grateful sort, he attempted to lure Superman into a gold kryptonite trap, until Superman discovered that Quex-Ul had actually acted under the mental control of another Kryptonian, Rog-Ar, the true rondor killer. Learning this, Quex-Ul threw himself into the trap to save the hero, losing his powers and memory.

In the 1982 The Phantom Zone mini-series, he later came to work at the Daily Planet

Daily Planet

The Daily Planet is a fictional broadsheet newspaper in the , appearing mostly in the stories of Superman. The building's original features were based upon the AT&T Huron Road Building in Cleveland, Ohio...

, believed himself to be an Earthman named "Charlie Kweeskill". He soon regained his powers and memory after he and Superman were trapped in the Zone by escaping criminals, who took advantage of his amnesiac state and mentally compelled him into freeing them. Both Quex-Ul (with his memories now restored) and Superman were subsequently trapped in the Phantom Zone, where they faced an extradimensional malevolent being called Aethyr, whose mind creates the Phantom Zone. To save the Man of Steel, Quex-Ul flew towards Aethyr and died in its fiery breath, sacrificing his life as a final act of redemption.

Post-Crisis

In the Pocket Universe

Pocket universe

-In science:A pocket universe is a concept in inflationary theory, proposed by Alan Guth. It defines a realm like the one that contains the observable universe as only one of many inflationary zones.-In fiction:...

 (which was an alternate version of the pre-Crisis Earth-One

Earth-One

Earth-One is a name given to two fictional universes that have appeared in American comic book stories published by DC Comics...

), Quex-Ul was freed with General Zod and Zaora from the Phantom Zone by a naive Lex Luthor

Lex Luthor

Lex Luthor is a fictional character, a supervillain who appears in comic books published by DC Comics, and the archenemy of Superman, although given his high status as a supervillain, he has also come into conflict with Batman and other superheroes in the DC Universe. Created by Jerry Siegel and...

, whereupon they turned Pocket Earth into a dead world. Quex-Ul and the others were executed by Superman using green kryptonite, a vengeful and uncharacteristic move that haunted him for some time.

Adventure Comics

In Adventure Comics

Adventure Comics

Adventure Comics was a comic book series published by DC Comics from 1935 to 1983 and then revamped from 2009 to 2011. In its first era, the series ran for 503 issues , making it the fifth-longest-running DC series, behind Detective Comics, Action Comics, Superman, and Batman...

 512, Quex-Ul makes an appearance under the cover name of Edward Robertson. He was later killed by Squad K of Project 7734. He is also shown in the phantom zone with General Zod

General Zod

General Zod is a fictional character who appears in comic books published by DC Comics, a supervillain who is one of Superman's more-prominent enemies. The character first appeared in Adventure Comics #283 , and was created by Robert Bernstein and George Papp...

 and the rest of the phantom zone criminals, including Jax-Ur

Jax-Ur

Jax-Ur is a fictional character, a Kryptonian supervillain in the . He first appears in Adventure Comics #289 and was created by Otto Binder and George Papp.-Pre-Crisis:Jax-Ur was an amoral and criminally deviant scientist on the planet Krypton...

, Non, Ursa, Car-Vex, Az-Rel and Nadria. His was a plan developed by Car-Vex aka Officer Romundi and General Sam Lane.

Novels

• In several 'Choose Your Own Adventure
  Choose Your Own Adventure
  Choose Your Own Adventure is a series of children's gamebooks where each story is written from a second-person point of view, with the reader assuming the role of the protagonist and making choices that determine the main character's actions and the plot's outcome. The series was based on a...
  
  '-type novels, Quex-Ul was one of the three prominent Phantom Zone criminals, notable for the fact that he was already very strong before he was exposed to a yellow sun. However, he was not exceptionally intelligent, and relied on General Zod to tell him what to do. This portrayal was more like Non, the movie villain who served as the basis for Quex-Ul's Post-Crisis incarnation.