Poki

Poki, A.K.A. Experiment 036, is an illegal genetic experiment created by Jumba Jookiba. He is designed to poke holes in water containers.

Bio
Experiment 036 was the 36th experiment to be created. He was designed to use his spiky tail to poke holes in water containers.

036 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
At an unknown point, 036 was presumably activated, captured by Lilo and Stitch and named Poki.

In "Shoe", Poki was one of the experiments who helped turn Jumba and Pleakley's ship into a hotel.

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

It is unknown whether or not Poki 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.