Knife Puppy appears in the Asdfmovie6 episode "Puppy". When a woman finds him, her husband informs her that the puppy has a knife. After that the puppy denies having a knife. He has an accent, and a voice like an adult, despite the fact that he is a puppy, not a grown dog.
Woman: Ooh! A puppy!
Husband: Oh, careful, honey, he has a knife.
Puppy: Oh, what? No, no, I don't!
- (note:this page is still not finish)