Experiment 350 was the 350th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to shoot rays out of his antennae.
350 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.
At the unknown point, he was activated, captured, tamed and named Addly.
The first 624 experiments, including Addly, 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.
Addly participated in the following battle between the experiments and the Leroy clones.
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.
Addly is a red and yellow experiment with 625-like head with sharper teeth, a green Stitch (626)-like nose, Stitch-like ears, 627-like body, four arms, and he has Leroy-like antennae.
Addly can shoot laser blasts from his antennae.
- Clyde was called this in his episode but it was proclaimed on the Disney website that Clyde was 150