Crusher

Crusher is Rattles's pitbull terrier. He is a tough-looking dog who starts off as cruel and monstrous but has become more tame because of Killer and Nemo. He is a member of the Sock Exchange.

Arthur

 * 507b. "Pet Peeved"
 * 701b. "The Great Sock Mystery"
 * 804b. "D.W., Dancing Queen"
 * 906b. "It Came From Beyond"