Antitherm, A.K.A. Experiment 012, is an illegal genetic experiment created by Jumba Jookiba. She is designed to keep Jumba's lab insulated and make for the weather nice for Jumba. Her one true place is in Jumba's lab.
Experiment 012 was the 12th genetic experiment created by Jumba with Hämsterviel's funding. She was designed to keep Jumba's lab insulated.
012 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai.
At an unknown point, 012 was activated, captured, tamed, and named Antitherm.
She was in Leroy and Stitch when Leroy caught all 624 genetic experiments and took them to the station.
Antitherm is a grey Morpholomew (316)-like experiment with small black eyes, small hands, small mouth, and tiny tail.
Antitherm makes all temperatures the opposite of what it is supposed to be.