Chewbacca was a Wookiee from the planet Kashyyyk. Like most Wookies, he is very strong, able to tear the arms off most humanoids. He doesn't speak but roars instead, but apparently everyone can understand him perfectly. He is Han Solo's best friend and co-pilot of the Millenium Falcon. Chewbacca was a member of the Rebel Alliance and helped bring down the Galactic Empire.
He also gets quite angry a lot, especially with members of the Empire and people who beat him at holo-chess. He enjoys tearing the limbs off Stormtroopers.