Bark (Voiced by George Newbern) is the main antagonist in Pup Star. According to Charlie, Bark was his backup singer. He stole his songs; Rock'em Dead and Rolling Bone and sang them on Pup Star. He had Roland and Kano the Bounty Hunter lock Charlie up in the dog pound. In the end, he was exposed as a thief and a copycat and was disqualified from Pup Star. Since then, Bark has plotted revenge against Tiny and attempted to regain control of Pup Star throughout the Pup Star film series.
- In Puppy Star Christmas Bark is fluffier.