Chewbacca

Chewbacca (better known as Chewie) is a Wookiee and a major protagonist in the Star Wars franchise. During the Clone Wars, Chewie worked with Jedi Ahsoka Tano and Yoda. By the time of the Galactic Empire, Chewbacca was the partner of Han Solo.

Personality
Due to Chewbacca's strong build and tall stature, he appears intimidating, which is why Luke Skywalker and Finn feared him when they first met him. However, Chewbacca is far from violent, and is, a very good friend who is very protective of Han Solo, who he owed a Life Debt to.