I hang with Han...
Chewbacca or "Chewie" (c. 200 BBY—25 ABY) was a Wookiee from Kashyyyk and co-pilot of Han Solo's ship, the Millennium Falcon. Chewbacca carried with him the name of an ancient Wookiee hero, the great Bacca, first of the great chieftains of Kashyyyk, and the creator of a sword that denoted leadership among the Wookiees. This name placed Chewbacca in a noble lineage, which was further supported by his role in the Battle of Kashyyyk.
Chewbacca was a wise, sophisticated being of great strength and loyalty. He was also a skilled mechanic. Chewbacca, like many Wookiees, was able to understand Basic, but he could not speak it due to his species' vocal structure. He instead spoke Shyriiwook, the Wookiee language that is largely composed of growls and grunts, to his human companions who typically replied in Basic.