Slick

Slick, A.K.A. Experiment 020, is an illegal genetic experiment created by Jumba Jookiba. He is designed to sell anything to anyone. His one true place is selling for charity. He is voiced by Jeff Bennett.

Bio
Experiment 020 was the 20th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to sell other experiments to unsuspecting victims.

020 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, Experiment 020 was activated.

He was found and taken in by Lilo and Stitch, who used him to try and sell things for a hula halau.

However, 020, named Slick, began selling everything the Pelekais owned, until Mertle took him.

Mertle then sold Slick to Experiment 625, but was traded by Lilo for a chocolate bar.

Slick later found his one true place in raising money for charity.

Leroy & Stitch
All 624 experiments, presumably including Slick, 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 Slick 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.

Personality
Slick is generally friendly and very polite, tipping his hat every time he greets somebody, but is very obsessive about selling things. He won't stop selling things until there is nothing left to sell, even selling himself to Mertle through a live auction. He is also very kind hearted and strongly supports his one true place working for charity.