Sellby, A.K.A. Experiment 115, is an illegal genetic experiment created by Jumba Jookiba. He is designed to sell expensive things. His one true place is in a flea market, selling less wanted items.
Experiment 115 was the 115th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to sell things at high prices.
115 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 an unknown point, 115's pod was dunked in a glass of milk, activating him. He couldn't sell anything to Jumba, so he was quickly captured, tamed and named Sellby.
Sellby is a yellow Slick (020)-like experiment with white chin, stomach and eye patches and black finger and toenails.
Sellby can sell anything in sight as soon as he lays a finger on someone whom he wants to tell that he has something to sell.
Sellby can also speak fluent English.