Dirty Bill is a bulldog featured in the film The Robber Kitten. He is a great bandit. While he is looked for, he falls on Ambrose whom he takes for a real bandit. Ambrose tells him a false story where he extorts money. Dirty Bill extorts his bag money (in fact, cookies); Ambrose avoids him. The fate of Dirty Bill remains uncertain. He is voiced by Billy Bletcher.