This pin is part of the Hitchhiking Ghosts Collection. The others in the collection are Gus, and Ezra. Phineas (AKA Dave) is 1 out of 3 in the set.
Phineas is a yellowish-green skeleton wearing a teal shirt with teal pants. His hat is both colors. Phineas has black hair, and he is carrying a teal handbag. He is doing the 'hitchhiking motion' with his thumb.