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.

           Dragon Ball Z Villains

Saiyan Army
Vegeta | Nappa | Raditz | Saibamen

Galactic Frieza Army
Frieza | King Cold
Frieza's Elites: Appule | Blueberry | Bund | Cui | Dodoria | Orlen | Vug | Zarbon
Ginyu Special Forces: Captain Ginyu | Burter | Guldo | Jeice | Recoome
King Cold's Elites

Red Ribbon Androids
Android 20/Dr. Gero | Android 19 | Android 17 | Android 18 | Android 16 | Cell | Cell Jr.

Babidi's Majins
Babidi | Dabura | Pui Pui | Yakon | Yamu | Spopovich

Majin Buu's Forms
Fat Buu | Super Buu | Kid Buu

Greger | King Moai | Lesoy | Mr. Shu | Princess Snake | Raiti & Zaacro | Van Zant and Smitty | Yetti