Berserker/Cane Lerman (Earth-54)

Berserker comes from Earth that Cane Lerman gave into his Dark Powers and became the Berserker and killed the Keepers after he obtained the Ebony Blade, He was recruited by the multiverse conqueror Nemesis into his Champions and together the conquered many universes till Nemesis sent him to Earth Prime to test it's defense and he defeated the Keepers and was about to kill them when Brawler returned from the Orion Force and defeated him with his Orion Powers. Berserker was locked in The Asylum till he broken out returned to Nemesis to report his findings.