Slushy

Slushy, A.K.A. Experiment 523, is an illegal genetic experiment created by Jumba Jookiba. He is designed to make ice and snowstorms. His one true place is making shaved ice.

Bio
Experiment 523 was the 523rd genetic experiment created by Jumba with Hämsterviel's funding. He was designed to make ice and snow, but could use these powers to convert areas into frozen tundras.

523 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, with 523's pod landing atop a vending machine.

Lilo & Stitch: The Series
When Stitch shook the vending machine, trying to get a soda, Slushy's pod fell out and rolled into a nearby drain, the sewage water activating the experiment.

523 then made his way to a helicopter base, where he stowed away aboard a helicopter and covered the island in snow.

Lilo and Stitch were eventually able to capture 523, who Lilo named Slushy, and took him back to their house. There, Lilo convinced Slushy to cover Lilo's house in more snow.

However, while Lilo and Stitch were busy playing in the snow, Gantu arrived and captured Slushy, causing the experiment to cover the island in a massive blizzard and create an ice palace for Gantu.

Lilo, Stitch and Splodyhead arrived at the ice palace to recapture Slushy. A long, drawn-out battle ensued between Slushy and Splodyhead, which ended when Slushy froze Splodyhead. Despite this, Lilo and Stitch were still able to recapture Slushy and find him a one true place making Shave Ice.

Slushy reappeared in "Elastico."

In "Angel," Slushy was one of the experiments who Angel reverted to evil using her song, causing the former to go on a rampage, freezing the town. Slushy and the other dehabilitated experiments attacked Stitch aboard a ship, but Angel turned them back to good before they could finish Stitch off. Working together, the experiments were then able to successfully escape the ship.

In "Spike," Slushy was one of the experiments in Pleakley's E.A.R.W.A.X. group. When Slushy created and threw a snowball at Pleakley with boredom, it instead accidentally hit Splodyhead, a battle ensued between the two experiments, which ended when Pleakley convinced Slushy and Splodyhead to attempt the hugging therapy on each other.

Slushy was one of the experiments in "Checkers" who joined Stitch in a rebellion against Gantu.

In "Snafu," Slushy and Dupe were seen using their combined powers to sell multiple Shave Ice cones. Gantu then attempted to revert Slushy and Dupe to evil with a recording of Angel's song, but due to interference from Experiment 120, Gantu's karaoke tape was played instead, much to Slushy and Dupe's humor.

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

Slushy participated in the following battle between the experiments and the Leroy clones by freezing oncoming waves of Leroys with his ice breath.

However, 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.

Personality
Slushy appears to hold a grudge against Splodyhead. But they resolved it in "Spike." He is a very happy experiment. He likes to play with his "cousins" by starting snowball fights. He also messes with his friends sometimes by making the ground slippery or freezing something they need (though he has done it less since Lilo turned him good). He does like some of the simple things, and misses them since he can no longer do them. He also cannot wait to find one of his family members so he can play with them again.

Even though most Experiments prefer to walk on all fours, 523 likes to walk on his hind legs, but he will walk on all fours to walk faster, or when he's scared.