Metamorph is a character featured in the episode Drool, the Dog-Faced Goblin in the television series The Real Ghostbusters.
Metamorph previously escaped the Ghostbusters, witch bothers them. When they watch a sideshow featuring a goblin named Drool, they are initially impressed and grossed out. But when a power line falls on Ecto-1, the believe Drool is responsible. Madame Lefarge prevents them from capturing him and tells them Drool would never do such a thing.
As it turns out, the real culprit is the shape-shifting Metamorph that narrowly escaped previous capture. They struggled to catch it until Drool bit and clamped down on it. The Ghostbusters were finally able to catch Metamorph; however, Drool was trapped with it and the two would forever be entangled.