Chewbacca (TFM)

Chewbacca was a male Wookiee who served as the copilot of the Millennium Falcon, the ship of the scoundrel and smuggler, Han Solo. He was afraid of being left alone in dark places, but had plenty of bravery when it counted.

Chewbacca was rescued by Han Solo from slavery in 15 BBY and declared a life debt of honor to the smuggler, which could be broken only by death. Because of ths debt, Chewbacca became a smuggler and later joined the Rebel Alliance, and eventually became the protector of the children of Han and Leia Organa Skywalker Solo.