The trio have black markings on all their hind legs and waist, resembling pants, with white spots. They all have black ears, and dropped right ears, a forehead marking similar to a lightning. They all wear necklaces with their respective numbers in them. Dimitri 1 has cuts on his right ear and his left eye has a black spot, his left ear has one white spot. Dimitri 2's right eye has a black spot and his left ear has 2 white spots. Dimitri 3 has cuts on his right ear, both eyes have black spots and his left ear has 3 white spots.
Despite the Dimitris not being part of the main cast, they are sometimes seen in promotional material, have played prominent roles in numerous episodes (such as "The Wow of Miaow", "Fetch" or "Diamond Dogs"), and doesn't have the identical models of the other puppies.