Experiment 221, better known as Sparky (voiced by Frank Welker), is a genetically created alien experiment. He was the first experiment that Lilo and Stitch turned from bad to good and first appeared in Stitch!: The Movie.
Sparky can turn his body into an electrical current, allowing him to fly or travel through electric-powered generators, appliances, devices, outlets, power lines, machines and other similar things. Another electrical current is generated between the two long antennae on his head, which can be used to send jolts towards foes, or when he gets irritated, annoyed, or is pulling pranks. He can create crippling electrical surges by using his antennae. He can also shoot lightning blasts from his antennae and generate and release massive discharges of electrical energy.
Sparky's powers, as his name may suggest, are electricity-related. Originally intended to create crippling electrical surges, he can also use the electrical currents to power machines, lights and such.
Like his "cousin" Stitch, he has a second pair of retractable arms at his side, though he rarely uses them. He has some enhanced senses when compared to a human—better hearing and better sense of smell. His short body can extend into a large streak of a tail as his moves through the air at high speeds, his body shining with electricity. He is an agile fighter with lightning-fast reflexes, using electrical attacks to deal massive damage. He can also manipulate objects and short-circuit electric-powered devices. Like Stitch, he can climb onto walls, hang from ceilings and see in the dark.
Sparky cannot pass through non-conductive objects and obstacles.
- Sparky will appear in a episode of Jeffrey & Friends' Adventures Chronicles.
- His own true place is powering the old lighthouse that had abandoned for requiring too much electricity, though he offers Stitch aid.
- Sparky will guest star in Craig & Friends land on Planet 51. At the end, he'll join the club.