Quex-Ul is a Kryptonian who is exiled to the Phantom Zone for killing Rondors, an endangered species, to profit off their healing horns.

[2] In The Phantom Zone miniseries, Quex-Ul works at the Daily Planet, believing himself to be a human named Charlie Kweskill.

In the Pocket Universe (an alternate version of the pre-Crisis Earth-One), Lex Luthor frees Quex-Ul, General Zod, and Faora, who ravage Earth before Superman kills them with kryptonite.

His basic abilities are sufficient for him to bend steel, overpower a locomotive, leap over a tall building in one bound, and outrun a speeding bullet, as well as virtual invulnerability, accelerated recovery, laser eyebeams, vortex breath, and flight.

[3] Quex-Ul appears in several Choose Your Own Adventure-type novels,[specify] as a prominent prisoner of the Phantom Zone who was reputed to be powerful without a yellow sun's rays, but not exceptionally intelligent, relying on General Zod for orders.