Vartox

Vartox was an alien convict imprisoned on Fort Rozz.

Hunting Supergirl
Vartox hunted down Supergirl after she saved a plane that was transporting several D.E.O. agents, including Alex Danvers. He lured her to a power plant and almost killed her, being stopped by other D.E.O. agents.

Death
While driving his truck, he was stopped by Supergirl and the two battled. When Vartox was about to kill Supergirl, she used her heat vision on Vartox's axe and the axe blew up. Vartox was fatally injured, and to prevent himself from being captured he killed himself with a fragment of the axe.

Powers and Abilities

 * Valeronian Physiology:
 * Super strength: Valeronians are much stronger than a normal human. He had been shown to be strong enough to inflict injury on a solar-empowered Kryptonian like Supergirl.
 * Invulnerability: Valeronians are was able to take more damage than a normal human. He had been shown to be resilient enough to endure attacks from a Kryptonian.
 * Super leaping: Valeronians can jump extreme distances.
 * Expert Hand-to-Hand Combatant: In addition to tremendous raw strength, Vartox was a skilled fighter, able to easily evade Supergirl's strikes and subdue her.

Equipment

 * Vartox's axe: To aid him in combat, Vartox wielded a special axe that emitted a high level of heat, that when powered by Vartox's super strength, is enough to pierce a Kryptonian's skin. Alas, the axe's ability proved to be its greatest shortcoming as it was destroyed by Kara heating it to levels that eventually caused it to explode.