Teenage Mutant Ninja Turtles

Season 4, Episode 2

Episode Title: Turtles of the Jungle

Air Date: 1990-09-11

Overview:

A professor's new ray-gun causes plants to go wild and his pet ape Jocko to become a giant rampaging monkey. By using the same ray-gun, Donatello is increased to Jocko's size so he can fight the giant ape and save April from him.