When Han Met Chewie
In the old Star Wars Expanded Universe, Chewbacca is an Imperial slave when he first meets Han Solo. As a young orphan, Han lived on a ship with a travelling gang of thieves. The captain heavily mistreated him and rest of the crew. Dewlannamapia, a female Wookiee crewmember, treated him kindly and became his surrogate mother. When she died, Han finally broke out on his own and tried to live a normal life. He entered the Imperial Academy and excelled. Witnessing the cruel treatment of Chewbacca, Cadet Solo intervened and the two fled the Empire. Owing a life-debt to Han, Chewie vowed to always stand beside him.