He is designed to be able to sell anything to anyone.
He is designed to be a beacon to signal the alien attack fleet, although the official Disney website stated his purpose is to keep people awake with his bright light. A yellow and purple centipede-like experiment that sits curled up like a crown on people's heads.
Topper is given to a little girl as a Christmas present, then placed atop the local Christmas tree and emits a light so bright that aliens from other galaxies can see him from Earth. He is designed to make his wearer a king or queen by hypnotizing those around them, with the exception of higher experiments.
A tan gourd-shaped experiment with a large opening at the top of his head who is designed to pop popcorn for Jumba's movie night. He was mentioned in "Angel" when a re-eviled Jumba lied to Lilo by saying that Angel (624) was this experiment.
A fast-talking, pink experiment with a Southern accent and a resemblance to Jumba and Cannonball (520), but with a smaller face and two ebony-black eyes.
A pink, four-headed, mustached experiment with four arms and four red bowties on his necks that speaks English. A blue platypus-like experiment with an accordion-like body who is designed to pull people's pants down.
He is designed to sing barbershop music off-key, annoying anyone who hears it (specifically, the first three heads sing well, but then the fourth sings off-key). He delights in humiliating people, and he won't stop embarrassing them until he gets the full effect.
A talented player of the harmonica and flute, he's also super-smart and athletic, making him very popular.
In the English dub of the anime A green seahorse-like experiment with purple eyes, a doughnut-like mouth, six ears, and a long curling antenna winding behind his head.
He can confine, and prevent movement by firing toruses at a target. Hasagawa's cats were activated, as indicated by Gantu's experiment computer, but did not physically appear in the episode.