Key is gold with a dark red paw on one end. He has red cheeks and black eyes. He has a black smile.
Key makes some cameo appearances in episodes. He appears in every Blue's Room episode. During his Debut, he was helping Blue find her gift. First, he tried the toy chest, however, the lock on it was too big, then he tried the sun beach but the lock on it was too wide. then he tried the grandfather clock but the lock on it was too narrow. after searching, he finds Blue's gift which a magical box which opens Blue's Room.