Jax-Ur

Jax-Ur is a Kryptonian supervillain in the DC Comics Universe. He first appears in Adventure Comics #289 and was created by Otto Binder and George Papp.

Fictional character biography

Pre-Crisis

Jax-Ur was an amoral and criminally deviant scientist on the planet Krypton. He was imprisoned in the Phantom Zone for destroying Wegthor, an inhabited moon of Krypton (population: 500), while experimenting with a nuclear warhead-equipped rocket. His sentence for his act of mass murder was imprisonment for eternity. He called himself "the worst criminal in the Phantom Zone". Jax-Ur was bald, chubby and had a thin mustache.

Jax-Ur's intention was to launch a nuclear missile to destroy a passing space rock. If this test proved successful, Jax-Ur would then commence the build-up of a massive, privately held nuclear arsenal with which he would overthrow the Kryptonian government, and place the entire planet under his dominion. In the World of Krypton miniseries, his missile collided with a spaceship piloted by Superman's father Jor-El and went off-course to destroy Wegthor. Because of this, space travel was forbidden on Krypton.