The genetic experiments created by Dr. Jumba Jookiba are a large group of genetically engineered alien lifeforms in Disney's Lilo & Stitch franchise. Dr. Jumba created them in his laboratory at "Galaxy Defense Industries", most of them with the shady financing of his former lab partner Dr. Jacques von Hämsterviel. Many of the creatures were designed for evil, mischievous, and destructive purposes, though how "evil" they act tend to vary. There are at least 628 experiments, the most famous of which is Experiment 626, better known as Stitch, who is the franchise's primary protagonist.
The experiments other than Stitch first appeared in prequel spin-off material that was released before the 2002 original film, including the PlayStation 2 game Disney's Stitch: Experiment 626. Although at least one of them have technically appeared in every Lilo & Stitch work—thanks to Stitch—they were not a major focus of the franchise until Stitch! The Movie, the 2003 direct-to-video pilot to Lilo & Stitch: The Series. In the television series, Stitch and his best friend Lilo Pelekai hunt down the experiments, who were scattered around Kauai as dehydrated pods thanks to the events of the pilot. The pods activate when they come into contact with water. When the duo captures and tames an experiment, Lilo gives them a name, and they find a "one true place" (i.e. occupation) where the experiment can use its abilities for productive purposes.
Stitch, inspired by Hawaiian terminology, refers to nearly all his fellow experiments as his "cousins" and sees them all as part of his 'ohana, or extended family.
List of experiments seen in games
Each experiment's number (except for those whose numbers are divisible by 100) are pronounced as individual digits (e.g. "Six-Two-Six" instead of "Six Hundred [and] Twenty Six"). The official shorthand prefix for "Experiment" is "X-" (X with a hyphen), according to The Series episode "Skip" and the Walt Disney World attraction Stitch's Great Escape!. All the first 626 experiments' names were fully revealed in The Series finale film, Leroy & Stitch.
Since it would take a long while to list all of the experiments here, especially since the large majority of them remain unseen in the franchise to this day, only the experiments who appear in video games are listed here. TV Tropes features a well-organized full list of experiments on their site. Experiments listed here are organized based on their experiment numbers; they are alphabetized in the characters tab on the sidebar to the right.
- X-010/Felix: Designed for cleaning purposes.
- X-025/Topper: Designed to signal a planet-invading alien fleet.
- X-040/Backhoe: Designed to efficiently dig and scrape up vegetation.
- X-158/Finder: Designed to effectively find anything upon request.
- X-221/Sparky: Designed to cause short circuits. He was the first experiment that Lilo and Stitch tamed, doing so in Stitch! The Movie.
- X-254/Mr. Stenchy: Designed to allure enemies with his cute charm in order to get them to take him to their headquarters, then in 42 hours he emits an odor so noxious that it would render a whole region inhospitable.
- X-502/Yang: Designed to spout lava.
- X-513/Richter: Designed to cause earthquakes.
- X-523/Slushy: Designed to generate tons of snow and ice.
- X-533/Blowhard: Designed to immobilize objects and people by blasting them with strong winds, causing his victims to fly like kites.
- X-602/Sinker: Designed to cut vessels with his large, sharp dorsal fin.
- X-606/Holio: Designed to turn into a black hole.
- X-608/Slugger: Designed to deflect enemy projectiles with his baseball bat-shaped tail.
- X-613/Yaarp: Designed to emit deafening sonic blasts.
- X-619/Splodyhead: Designed to fire hot plasma from his lone nostril.
- X-621/Chopsuey: An early prototype of 626 who only appears in Disney's Stitch: Experiment 626, which was retconned by the film Lilo & Stitch 2: Stitch Has a Glitch.
- X-624/Angel: Designed to sing a siren song that reverses the morality of reformed creatures, primarily the experiments made before her. Stitch's girlfriend and the only predecessor he does not call a "cousin"; they call each other "boojiboo", which in their Tantalog language basically means "beloved" or "loved one".
- X-625/Reuben: Designed for the same purposes as his immediate successor, but is too much a lazy coward to do so. He can speak English fluently and loves to make delicious sandwiches. He was first activated in Stitch! The Movie, but he was the last experiment to receive his name (in Leroy & Stitch).
- X-626/Stitch: Designed to destroy large cities and "everything he touches". The franchise's "cute and fluffy" titular lead, he defied his destructive programming after meeting Lilo.