Arnolda Is a white female pit bull who only appeared in the episode Prom-ise Her Anything. She is a tall, white female pit bull with black hair, huge muscles (same as Arnold), black hair, and wears a red dress. She made her first (and only) appearance in Prom-ise Her Anything, when Buster mistakes her for Arnold and Arnold comes and tells Buster and the guys that she is the only other girl who looks better than him.