Grevel

Grevel was a male Aleena who lived on the Colossus during the era of the New Republic. He was a regular patron of Aunt Z's Tavern. At some point, he cheated on a game of holo-darts against Kazuda Xiono, who did not pay him back. Grevel attempted to collect Xiono's debt at least twice, and on the second attempt was interrupted by a pirate attack. Although Xiono had saved Grevel, the Aleena continued to act as an aggressor to him, still holding a grudge over their previous spat.

Text and facts from the “Grevel” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.