Jeb is Ryan's pet Redbone Coonhound, whom he had since he was young. Jeb was accidentally subjected to a power surge in part two of "The Battle Begins" that gave him the ability to speak. Ryan had him promise that he would never speak when around other people, so Jeb is usually silent except while in the lab. Jeb is known for both his mischievous personality and his humorous demeanor. Often, Jeb serves as comic relief, and both Percy and Mrs. Rooney are frequent victims to his antics. Jeb had to fight as a Trooper once when he and Ryan accidentally switched bodies. He also has a voracious appetite eating any food lying around, including food from Ryan and the other Troopers.