T.U.F.F. Puppy

It's about Dudley Puppy, a dog who works as a spy for T.U.F.F. all the time. His partner is Kitty Katswell, a cat. Other people he works with are The Chief and Keswick. It takes place in the fictional city of Petropolis (different from the Brazilian city of Petrópolis, which is named after Pedro II of Brazil), where the people who live there are anthropomorphic animals. As a member of T.U.F.F., Dudley helps Kitty protect Petropolis from various villains, such as Verminious Snaptrap and his crime organization D.O.O.M., The Chameleon, Bird Brain, Larry, Ollie, Francisco, Skunk, Zippy, and Bad Dog.

• Dudley Puppy (voiced by Jerry Trainor) - a dim-witted dog who has a black shirt.
• Kitty Katswell (voiced by Grey DeLisle-Griffin) - a smart adult agent cat. She's tan. She's Dudley's partner, best friend and love interest.
• The Chief (voiced by Daran Norris) - a small flea.
• Keswick (voiced by Jeff Bennett) - a Keswick (species) who's always so intelligent.
• Verminious Snaptrap (voiced by Maddie Taylor) - an evil rat who leads D.O.O.M. now.
• The Chameleon (voiced by Daran Norris) - a light green evil chameleon.
• Bird Brain (voiced by Rob Paulsen) - a blue evil genius bird.
• Leather Teddy (voiced by Eric Bauza)
• Ollie (voiced by Mike de Seve) - a skinny opossum. He speaks with a British accent.
• Francisco (voiced by Michael Rianda) - a green crocodile.
• Bad Dog (voiced by Richard Steven Horvitz) - a bad dog.
• Peg Puppy (voiced by Leslie Carrara-Rudolph) - Dudley's mother.
• Mrs. Katswell (voiced by Grey DeLisle-Griffin) - Kitty Katswell's mom.
• Katty Katswell (voiced by Grey DeLisle-Griffin) - Kitty Katswell's evil twin sister.
• Martin Dumbrowski (voiced by Jerry Trainor) - The Chief's brother.
• Keswick's parents (voiced by Grey DeLisle-Griffin (Keswick's mother))
• Stan - Keswick's brother-in-law.
• Ms. Snaptrap (voiced by Grey DeLisle-Griffin) - Snaptrap's mother.
• Larry (voiced by Jeff Bennett) - a gray shrew who's Snaptrap's brother-in-law.

• List of T.U.F.F. Puppy episodes