Eidos Montreal says that Lucasfilm "loved the inclusion" of Chewbacca in Guardians of the Galaxy.
For anyone who's played Guardians of the Galaxy (if you haven't, go fix that), you'll know that there are tons of references and easter eggs throughout Peter's journey, ranging from winks to other games like Pac-Man, to other heroes like Throg and Dazzler. One of the most interesting easter eggs is Peter's Chewbacca toy, which actually ends up having some story importance.
Related: Hawkeye Does
Read more on thegamer.com