Dupe

Dupe, A.K.A. Experiment 344, is an illegal genetic experiment created by Jumba Jookiba. He appears in the Lilo &amp; Stitch TV series episode "Dupe." He is voiced by Dennis Quaid.

Bio
Experiment 033 was the 033th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to generate clones with the appendage on his head; however, the traits of the cloned object become divided amongst the original and the clones; in other words, each duplicate is not as powerful as the original. Also, the replicas, which due to their less powerful nature after being cloned, may not have as many calories.

033 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
Lilo and Stitch manage to escape Gantu with an activated experiment that she names Dupe. Later she plans a slumber party and invites Mertle and her friends, although Mertle secretly tells Elena, Teresa and Yuki that they weren't going to come to Lilo's party.

When Lilo realized that Mertle and her friends didn't show up for her party, she decided to use Dupe to clone herself and have "friends" to hang out with. However, during Dupe's mid-cloning process, Stitch got in the way and was cloned into four replicas of himself instead.

Meanwhile, Gantu notices four experiment pods in a shop, which he steals, activates, and names Plasmoid, Heat, Thresher and Hammerface. He trains the four experiments into capurting Stitch, their target. Later on, Plasmoid, Heat, Thresher and Hammerface were led by Gantu in an attack on the Pelekais' house, where the four experiments were able to easily defeat and capture Stitch and his replicas.

The five returned to Gantu's ship for a victory feast, but were interrupted by Lilo, Pleakley and Dupe. Gantu used Dupe to clone Plasmoid, Heat, Thresher and Hammerface into a hundred replicas, but as the four experiments' powers was thus divided between them, they were complete weaklings.

Dupe's one true place is working at as an ice cream vendor and making half-calorie replicas of shaved ice and other frozen treats.

Leroy & Stitch
The first 624 experiments, including Dupe, 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 Dupe 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.