Jumby, A.K.A. Experiment 622, is an illegal genetic experiment created by Jumba Jookiba. He is designed to be Jumba's clone, but he is smaller than him and only speaks Tantalog. His one true place is unknown.
Experiment 622 was the 622nd genetic experiment created by Jumba with Hämsterviel's funding. He was designed to be Jumba's clone.
622 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, 622 was presumably activated, captured, and named Jumby.
The first 624 experiments, presumably including Jumby, were rounded 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 Jumby 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.
Jumba is a small purple experiment that resembles Jumba with 5 spikes running down his back, longer ears and dark purple back markings resembling a vial and a mushroom cloud. Jumby is thinner, a tad shorter, and has a resemblance of a dog.
- Jumba is described by the experiment computer screen as, "Experiment 622 Primary function: Designed to be Jumba's clone".