Lucifer is from an alien race that wants to conquer the Earth and enslave humanity. He first met Professor X
long before the X-Men were formed in a city called Tibet. Lucifer had mentally captured all the Tibetan citizens for his own purposes. Xavier arrived at Tibet and incited rebellion to save the villagers. After a brief fight, Lucifer hurled an enormous rock which crushed Xavier's body. From the impact and shock of this injury, Xavier is paralyzed. Years later, Professor X and Lucifer meet again in Europe. Xavier, with the help of his X-Men, defeat Lucifer but allow him to escape. The pair meet yet again, when Lucifer mentally controls Unus
to rob a bank disguised as X-Men
. The X-Men track Lucifer's mental waves to a cave in the Southeast Desert, where the team fights and defeat Lucifer soundly. After many failures the Supreme One
, Lucifer's boss, becomes enraged at Lucifer's lack of success against the X-men. Lucifer is then exiled by the Supreme One forever.