Jacob, A.K.A. Experiment 446, is an illegal genetic experiment created by Jumba Jookiba. He is designed to instigate interplanetary wars (does so by creating conflict anywhere he goes by any means necessary, will spread rumors and even launch the first attack and then blame it on the other guys in order to start a war).
Experiment 446 was the 446th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to instigate interplanetary wars.
446 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 Jacob.