The Kappauku tribe was first mentioned in "Tooth and Claw," a short story that was published in the 2020 anthology book From a Certain Point of View: The Empire Strikes Back.
In the original draft of Star Wars: Episode IV A New Hope, Chewbacca had a father named Auzituck. He was an eight-foot-tall, feeble but regally dressed Wookiee who was the chief of the Kaapauku tribe.