Each experiment was designed with a specific (often chaotic) primary function and a unique number. They are categorized into series based on their purpose:

In this experiment, Dr. Jumba creates an intelligent and energetic being with superhuman strength. Spudnick becomes a loyal companion to Experiment 626 (Stitch) and joins him on his various adventures. This experiment highlights Stitch's ability to form strong bonds with his fellow experiments and demonstrates the power of friendship and loyalty.

The experiments represent a chaotic, loud, and weirdly functional family. From the destructive power of Stitch to the sandwich-making laziness of Reuben, the "all experiments" concept turned a movie about two lonely characters into a universe about finding a home for every misfit.

| # | Name | Primary Function | One True Place | Key Episode / Film | | :--- | :--- | :--- | :--- | :--- | | | Cyclone | Creates mini-hurricanes | Weather control / Disaster relief | The Origin of Stitch | | 001 | Shrink | Shrinks objects & people | Micro-surgery / Storage | Leroy & Stitch | | 006 | Stitch (Defective) | Destruction, chaos, strength, intelligence | Ohana – Lilo’s family | Lilo & Stitch (2002) | | 007 | Gigi | Destroys documents / evidence | Paper shredder / Confidential waste | "Spats" | | 008 | Babyfier | Turns beings into infants | Reset life / Second chances | "Babyfier" | | 020 | Felix | Creates extreme, obsessive cleanliness | Hazmat / Sterilization units | "Felix" | | 024 | Slick | Master of grease & slipperiness | Industrial lubrication | "Slick" | | 031 | Poxy | Transmits a potent, itchy rash | Vaccine delivery (modified) | "Poxy" | | 033 | Hammerface | Face transforms into a wrecking ball | Demolition / Construction | "Hammerface" | | 062 | Frenchfry | Summons junk food from thin air | Emergency food supply | "Frenchfry" | | 119 | Plasmoid | Shoots plasma energy balls | Portable energy generation | "Plasmoid" | | 120 | Houdini | Master escapist (any restraint) | Rescue / Extraction | "Houdini" | | 151 | BONUS | Duplicates itself (exponentially) | Swarm labor / Pollination | "Bonus" | | 177 | Clip | Glues objects & people permanently | Construction / Repair | "Clip" | | 199 | Muddy | Creates large mud geysers | Agricultural tilling | "Muddy" | | 202 | Pruney | Sucks water from any source | Desalination / Irrigation | "Pruney" | | 204 | Holio | Creates a black hole (small) | Waste disposal / Recycling | "Holio" | | 210 | Retro | Ages objects / beings backward | Museum restoration | "Retro" | | 221 | Spike | Releases blinding electric flashes | Emergency signaling / Light source | "Spike" | | 222 | PJ (Plasma Junior) | Spits sticky, corrosive mucus | Industrial solvent delivery | "PJ" | | 223 | Glitch | Causes technology to malfunction | E.M.P. disruption / Security | "Glitch" | | 234 | Shush | Creates zones of absolute silence | Library / Hospital quiet zones | "Shush" | | 244 | Finder | Locates any lost object or person | Search & rescue | "Finder" | | 251 | Link | Mind-control via touch | Therapy / Phobia treatment | "Link" | | 258 | Baby | Selective gravity manipulation | Orbital lift / Construction | "Baby" | | 262 | Ace | Extreme sports & luck | Stunt performance / Luck charm | "Ace" | | 267 | Wishy-Washy | Changes memories | Trauma erasure (ethical use) | "Wishy-Washy" | | 275 | Sprout | Rapid plant growth | Reforestation / Farming | "Sprout" | | 276 | Remmy | Induces vivid nightmares | Lucid dreaming therapy | "Remmy" | | 277 | Heat | Generates intense heat | Welding / Space heating | "Heat" | | 278 | Thresher | Sonic vibrations that shatter stone | Mining / Excavation | "Thresher" | | 279 | Sonic | Deafening sonic screech | Emergency alert | "Sonic" | | 280 | Hunkahunka | Attracts others uncontrollably | Matchmaking / Social bonding | "Hunkahunka" | | 281 | Backhoe | Digs tunnels at high speed | Subway / Cave rescue | "Backhoe" | | 282 | Belle | Hypnotic singing voice | Musical therapy / Calming | "Belle" | | 283 | Claude | Creates total camouflage (environmental) | Wildlife photography | "Claude" | | 284 | Slushy | Flash-freezes anything | Cryogenics / Ice sculpting | "Slushy" | | 285 | Wiggy | Causes uncontrollable dancing | Physical therapy / Exercise | "Wiggy" | | 286 | Morpholomew | Shapeshifts into any form | Undercover work / Acting | "Morpholomew" | | 287 | Zap | Electrical generation (low voltage) | Battery recharging | "Zap" | | 288 | Nosy | Hyper-sensitive smell | Bomb sniffing / Medical diagnosis | "Nosy" | | 289 | Snafu | Causes confusion & miscommunication | Language teaching (reverse) | "Snafu" | | 290 | Sketchy | Draws anything perfectly | Animation / Architectural design | "Sketchy" | | 291 | Shortstuff | Shrinks self to tiny size | Micro-exploration | "Shortstuff" | | 292 | Deflector | Creates force fields | Protection / Arena sports | "Deflector" | | 293 | Snooty | Judges & critiques art | Art critic / Quality control | "Snooty" | | 294 | Spooky | Creates minor illusions | Haunted attractions | "Spooky" | | 295 | Splash | Generates high-pressure water jets | Firefighting / Pressure cleaning | "Splash" | | 296 | Blowhard | Extreme wind gusts | Wind power / Sail assist | "Blowhard" | | 297 | Sparky | Electromagnetic pulse (small) | Anti-theft systems | "Sparky" | | 298 | Topper | Summons hats of any kind | Fashion / Theater | "Topper" | | 299 | Sinker | Makes things ultra-dense | Deep-sea exploration | "Sinker" | | 300 | Spats | Causes shoes to kick things | Comedy / Automated kicking | "Spats" | | 303 | Amnesio | Selective memory erasure (touch) | Witness protection | "Amnesio" | | 313 | Hocker | Spits high-impact globs | Non-lethal riot control | "Hocker" | | 316 | Dupe | Clones objects (imperfectly) | Mass production | "Dupe" | | 319 | Fibber | Forces truth-telling | Courtroom / Confession | "Fibber" | | 322 | Bluken | Creates super-strength via bloat | Heavy lifting | "Bluken" | | 323 | Lax | Induces extreme relaxation | Sleep aid / Meditation | "Lax" | | 324 | Checkers | Rearranges molecules into patterns | Patterning / Art | "Checkers" | | 325 | Ploot | Summons space slugs | Gardening (pest control) | "Ploot" | | 326 | Slapper | Sonic clap shockwave | Emergency door opening | "Slapper" | | 328 | Stamen | Pollen explosion | Mass agriculture | "Stamen" | | 329 | Swirly | Spins objects at high RPM | Centrifuge / Mixing | "Swirly" | | 344 | Dupe (alt) | Duplicates self (1 into 4) | Work crew | "Dupe" | | 345 | Hunk | Super-strength (dense muscle) | Construction | "Hunk" | | 346 | Plasmite | Thermal explosion (small) | Mining charges | "Plasmite" | | 349 | Drowsy | Sleep-inducing gas | Anesthesia | "Drowsy" | | 350 | Snarf | Eats inorganic matter | Waste management | "Snarf" | | 351 | Boom | Explosive sneezes | Demolition | "Boom" | | 352 | Buggy | Summons insects | Pollination / Pest control | "Buggy" | | 353 | Clink | Super-hearing | Surveillance / Search | "Clink" | | 354 | Gax | Turns water to solid gel | Flood control | "Gax" | | 355 | Tank | Indestructible shell | Armored transport | "Tank" | | 360 | Slugger | Hyperspeed punches | Boxing training | "Slugger" | | 361 | Pip | Grows to giant size | Heavy lifting | "Pip" | | 362 | Skip | Short-range teleport | Rescue / Quick travel | "Skip" | | 363 | Wraith | Turns invisible & intangible | Stealth operations | "Wraith" | | 364 | Finder (alt) | Finds water sources | Dowsing | "Finder" | | 365 | Ringer | Perfect voice mimicry | Voice acting | "Ringer" | | 366 | Ruffles | Feather projectiles (sharp) | Non-lethal defense | "Ruffles" | | 367 | Thor | Lightning summoning | Power generation | "Thor" | | 368 | Jam | Electronics jammer | Privacy zone | "Jam" | | 369 | Sneak | Silent movement | Stealth | "Sneak" | | 370 | Blowhard (alt) | Breath weapon (cold) | Air conditioning | "Blowhard" | | 371 | Houdini (alt) | Lock picking | Escape rooms | "Houdini" | | 372 | Fang | Diamond-hard teeth | Cutting tool | "Fang" | | 373 | Tickle | Tickling tentacles | Laughter therapy | "Tickle" | | 374 | Woops | Causes minor accidents | Safety testing | "Woops" | | 375 | Melt | Acid secretion | Metal cutting | "Melt" | | 376 | Lurk | Shadow blending | Surveillance | "Lurk" | | 377 | Yin-Yang | Split personality (light/dark) | Drama / Acting | "Yin-Yang" | | 378 | Chopsuey | Cooking perfection | Chef | "Chopsuey" | | 379 | Sneeze | Allergen blast | Allergy research | "Sneeze" | | 380 | Sinker (alt) | Gravity increase | Weight training | "Sinker" | | 381 | Shock | Electric aura | Bug zapper | "Shock" | | 382 | Hush | Sound absorption | Quiet zones | "Hush" | | 383 | Plasma (alt) | Plasma blasts (low yield) | Welding | "Plasma" | | 384 | Leech | Energy drain | Battery backup | "Leech" | | 385 | Sludge | Toxic mud generation | Fertilizer | "Sludge" | | 386 | Stinky | Odor generation | Skunk control | "Stinky" | | 387 | Gloop | Sticky goo | Adhesive | "Gloop" | | 388 | Grout | Cement generation | Construction | "Grout" | | 389 | Stitch (clone) | Identical to 626 | Backup Ohana | "Stitch" | | 390 | Kixx | Martial arts mastery | Self-defense teacher | "Kixx" | | 391 | Cannonball | Bouncy, heavy sphere | Bowling / Sports | "Cannonball" | | 392 | Puff | Poison gas (sleep) | Pest control | "Puff" | | 393 | Scratch | Claws that cut anything | Carving | "Scratch" | | 394 | Claw (alt) | Grappling hook claws | Climbing | "Claw" | | 395 | Pliers | Super-grip | Lifting | "Pliers" | | 396 | Vise | Crushing strength | Recycling | "Vise" | | 397 | Snap | Finger-snap shockwave | Door opening | "Snap" | | 398 | Crackle | Static electricity | Static cling removal | "Crackle" | | 399 | Pop | Confetti explosion | Celebration | "Pop" | | 400 | Leroy | The ultimate evil experiment (perfected 626) | Rehabilitation (defective) | Leroy & Stitch |

: Focused on disrupting society or providing civic functions, like Sparky (221) , who controls electricity.

While there are hundreds of experiments, these three define the series.