Experiment 116 was the 116th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to put switches in the opposite directions (ex. If something is “Off” he’ll turn it “On”.).
116 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 Switch.
When he points his tails at two different people he has the power to switch the two.