PJ (Lilo & Stitch)

PJ, A.K.A. Experiment 133, is an illegal genetic experiment created by Jumba Jookiba. He is designed to play practical jokes on people. His one true place is performing an opening act for Moses Puloki's hula gig.

Bio
Experiment 133 was the 133rd genetic experiment created by Jumba with Hämsterviel's funding. He was designed to play practical jokes on people.

133 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.

Lilo & Stitch: The Series
He was first seen in episode 47. He was found when a man was using a metal detector when it starting beeping, when he looked to see what it was he found an empty soda can with the experiment pod It. He didn't think that is was worth anything so he through into the water activating him. He then went on to start playing jokes on everyone that he could find. He ended up finding Lilongwe and stitch when he pulled many pranks on stitch, the latter then tried to beat him up. After that, PJ ended up pranking Stitch and got him stuck in a containment pod. Lilo wanted to play a prank on a substitute teacher for her hula class so she got PJ to help her with it. Stitch got out of the container pod and tried to stop them because PJ was going to do a really big prank that ended up backfiring that made him literally get his button kicked (several times actually).

Leroy & Stitch
The first 624 experiments, including PJ, were round up by Leroy and taken to a stadium to be destroyed. However, Lilo, Stitch, Jumba, Pleakley, Reuben and Gantu arrived before the experiments could be destroyed.

It is unknown whether or not PJ participated in the following battle between the experiments and the Leroy clones.

The Leroys soon gained the upper hand in the battle, but were defeated when Lilo, Stitch, Reuben and several other experiments performed the song Aloha Oe, which caused the Leroy army to shut down due to the original Leroy's failsafe