Greger is one of the evil Arlians loyal to King Moai. Like all other Arlians, he only appeared in the seventh episode of Dragonball Z (and its redub counterpart).

By the time Vegeta and Nappa arrived on Arlia, Greger was Moai's champion. However, in a battle for championship, he was defeated by Lesoy, who nonfatally stabbed him. Lesoy became champion, and Moai had Greger thrown into The Pit, where he was eaten by Yetti after begging for mercy.