Supreme Dog was the owner of the Rabid Dog candy company. They made lots of money off of their "Big Boss Bars" due to their addictiveness. Buster did some investigating, and asked Supreme Dog to eat one, causing him to panic and run away. Buster's mom wrote a front page story the next day for the Elwood City Times titled: "Candy Bar Company Cons Kids". Afterwards, Supreme Dog was apprehended and sent to prison for multiple charges of Corporate Child Endangerment and Fraud. Supreme Dog has only appeared in one episode, To Eat or Not to Eat.