Chewbacca or 'Chewie' to his friends is a legendary Wookiee from Kashyyyk and co-pilot to Han Solo on the Millenium Falcon.

Chewbacca carried with him the name of an ancient Wookiee hero - the great Bacca, the first of the great cheiftans of Kashyyyk and the creator of the sword that denoted leadership. 

Chewie was also a great mechanic. He can understand basic language but unfortunately cannot replicate it due to his anatomical vocal structure.