The oldest of the Test Tube Babies, Cain is often seen as Abel's elder twin. He was once the gentle, beloved leader of the Mars Colonization Project, until an accident killed him. Seth injected him with the Crusnik nanomachines which saved his life, but also drove him insane. In the war following the return of the colonialists to Earth, he and Abel took the side of the vampire returners. When Lilith's influence made Abel question their choice, Cain killed her. Furious, Abel and Seth confronted their brother, pushing Cain out of the space ship and into the atmosphere. His body burned into a pile of ash. Cain was able to regenerate his body from the ash, however, he sometimes has difficulty holding his makeshift body together.
Nine hundred years later, he met Isaak Fernand von KÃ¤mpfer. Together, they took over the Rosenkreuz Orden, a small, insignificant organization in Berlin that consisted of enemies of the Vatican. Through Cain and Isaak's charisma and power, the Orden grew into the world's leading terrorist organization. Cain's motivations are unclear, but he seems bent on the destroying humanity and the world. His subjects refer to him as "Mein Herr" which is German for "My Lord." He is also referred to as "Mein Herr Contra Mundi", German for "My Lord Against the World". His most popular title, however, appears to be Contra Mundi.