“Well, you're right about one thing, Rhino. Mittens does need a hero, and I guess I'll have to do."
- Bolt

Acting for a popular TV series, Bolt is a super dog (who was altered by Penny's father to protect her) who can bend metal, melt objects with his eyes, run faster than a speeding car, and cause massive destruction with his super bark. However, unlike the other two animal actors on the set, Bolt believes that everything he and Penny goes through is real, so he never lets his guard down. It isn't until he meets Mittens, a stray cat in New York City, that he learns that he's apart of a TV show, and that his powers are fake. This reality hits Bolt hard, but he over comes this and thrives as a normal dog after saving Penny from a burning set.