Carat, A.K.A. Experiment 198, is an illegal genetic experiment created by Jumba Jookiba. He is designed to put lots of rats inside your car.
Experiment 198 was the 198th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to put lots of rats inside your car.
198 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 the unknown point, he was activated, captured, tamed and named Carat.