Grinder is a Sanrio character who is a male bulldog. He only appears in the television series Hello Kitty's Furry Tale Theater. He is sometimes a protagonist and he is sometimes an antagonist. Grinder is not very intelligent and he tries to be masculine, as he has tons of weights and other workout equipment in his dressing room. He is Catnip's boyfriend.
- Himself in "Tar-Sam of the Jungle"
- Black Knight in "Paws of the Round Table"
- Grinderosso in "Pinocchio Penguin"
- Sheriff Grinder in "Robin Penguin"
- Hulk Aligator in "Crocodile Penguin"
- Dwarf Grinder in "Snow White Kitty and the One Dwarf"
- Frankencat's Monster in "Frankencat"