Hmm..

Little Dog gets called Naked Dog, Naked, and Naked Naked Naked.

Trixie gets called Trix.

Willy gets called Prince William, Willy Boy, Willy Willy Willy, the Prince, and Willy Man.

Soni gets called Soni Funny Bunny DeathCat, Funny, and Bunny.

Isis gets called Isis Riceiss Pooty Doody Head.