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 Kal-El, 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.