After Koschei's first incarnation attempted suicide by ingesting poison, due to the drumming in his head driving him insane, Theta Sigma saved his life by injecting him with a serum to "speed up the regeneration process". Koschei regenerated and became this incarnation. In his second incarnation, Koschei became a governor, just like his father, Drusus. He became very wealthy and married a Time Lady named Alexandra. Together, they had a son, Cadmus. Living for 900 years, this incarnation died of old age, and regenerated into Koschei's his third incarnation.