Kain was one of Doctor Demonicus' devoted scientists, willing to do whatever his leader commanded, even subjecting himself to experiments as his other Overlords had done. Nevertheless, Kain remained as a scientist, using his powers as an "ace in the hole" in final conflict with the Avengers.
Kain appeared to die when Demonica sank but other survivors have been seen.
Powers and Abilities
Kain has the ability to grow to over 100 feet in height, presumably with proportional increase to his strength and endurance. Kain's body, when grown, takes on a synthetic appearance with increased resistance to all attacks, and metal studs protrude from his head. Kain is also able to control mechanical systems.