Dennis

Dennis is the secondary antagonist of Ryan's Recycling.

He is voiced by Bob Peterson who also played Finn McMissle in the same film and Sly in Terminal Railways.

Ryan's Recycling

Dennis is a BR Class 08 owned by Ivan Clarkson. He is the leader of the train pack and is usually found with Hayden and Peter, his lieutenants. Like Finn, he has a face that allows him to talk, but a minor malfunction makes him sound as if he'd been inhaling helium, giving him a squeaky voice. The real voice for Dennis's translator chip (after Ivan fixes his face) is a deep, intimidating voice. Mr Hickman says he likes the high-pitched voice better than the intimidating one.

Dennis has a very condescending and proud disposition, and looks down on all the other trains in the pack. When Finn fails to bring Raoul Caroule (the car) to Dennis, he puts Finn in the "Wall of Shame." In the climax of the film, Dennis clashes with Finn inside the airship until Finn finally defeats Dennis by trapping him under the helm and sticking a wall airship instrument housing over the BR Class 08's head as the "Wall of Shame." Dennis breaks his face, making his voice high-pitched again, which causes the other trains to ridicule him and bestow the "Dennis" title upon Finn.

In the background, he can be seen panting with happiness once Ivan says "freight" to Ryan and his dad.