In the fictional city of Petropolis dog Dudley Puppy works as a spy for the organization T.U.F.F. (Turbo Undercover Fighting Force). Together with his partner, a cat named Kitty Katswell, Dudley works to protect Petropolis.

• Jerry Trainor
• Grey DeLisle
• Daran Norris
• Jeff Bennett
• Maddie Taylor
• Rob Paulsen