Gillmore, A.K.A. Experiment 270, is an illegal genetic experiment created by Jumba Jookiba. He is designed to force people to live underwater (does so by dousing his targets in water and causing them to grow gills, forcing them to go into the water).
Experiment 270 was the 270th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to force people to live underwater .
270 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, 270 was activated, captured, and named Gilmore.