The episodes The Creepy Goon from the Spooky Lagoon and Dr. Lupiter and the Thing from Jupiter are the only season two episodes in which Baby Fangs/Fangpuss did not make an appearance.
During Season 2, Fangface and Fangpuss would never see the sun, or a representation, as shown in the episode There Is Nothing Worse Than A Stony Curse, and transform back to normal before the gangs' case would be over.