Experiment 498 was the 498th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to jump in water, until there is a flood.
498 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 Floods.
Floods is a light blue Mary (455)-like experiment.