Jax-Tor was a colonel and administrative officer for the Kryptonian Bureau of Investigation on the planet Krypton. Many years prior to the birth of Superman, Jax-Tor instructed agents Jor-El and Lara Lor-Van to go undercover and infiltrate the lair of renowned terrorist, Kil-Lor. Jax-Tor died however a few days before Kil-Lor could be brought to justice.
- This version of Jax-Tor (Earth-One), including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse, saving all the alternate realities, though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 2 Appearances of Jax-Tor (Earth-One)
- 1 Images featuring Jax-Tor (Earth-One)
- Quotations by or about Jax-Tor (Earth-One)
- Character Gallery: Jax-Tor (Earth-One)