I've been writing brief outlines for my own Pound Puppies Episodes that focus on the old cast, mainly Whopper. Inside Pound Puppy HQ, Whopper simply wears his diaper and collar. When outside, he dons the clothes he wore in the movie. This doesn't mean he'll never be seen in his diaper outside. He can still use his safety pin to pick locks and there may be instances where he loses his clothes.