Zeb Orrelios was a Wookie wannabe mostly because nobody knew what species he was including him. He was a member of the Rebels crew and they all hated him because he was always in a bad mood and threatening them when he was really only mad because he had fleas and herpes. Eventually he met Chewbacca and said "We're like brothers because I'm pretty much a Wookie too" Chewie did not think this was very funny so be blew his head off.

Chewie shortly before splattering the rebels front windshield with Zebs blood.