Sepia, A.K.A. Experiment 558, is an illegal genetic experiment created by Jumba Jookiba. She is designed to bite people and make them swollen.
Experiment 558 was the 558th genetic experiment created by Jumba with Hämsterviel's funding. She was designed to bite people and make them swollen.
558 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, she was activated, captured, tamed and named Sepia.
Sepia is an experiment resembling a brown version of a black widow spider.