Cat, A.K.A. Experiment 298, is an illegal genetic experiment created by Jumba Jookiba. He is designed to be a pet.
Experiment 298 was the 298th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to be a pet.
296 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, 298 was activated, captured, tamed, and named Cat.
As his name suggests, Cat looks like a cat. However, he is blue (not "breeder blue" as a real cat would be), so he would not be easily mistaken for a real cat. His tail curls into itself at the end.