Angel

Angel, A.K.A. Experiment 624, is an illegal genetic experiment created by Jumba Jookiba, and Stitch's love interest and female counterpart. She is designed to revert rehabilitated people and experiments to evil with a siren song, though it can have the opposite effect if the song is heard backwards. Also, experiments that were created after her, like Stitch, Reuben, 627, Scar, and Leroy, are immune to her song. Her one true place is with Lilo as her pet and Stitch.

Bio
Experiment 624 was the 624th genetic experiment created by Jumba with Hämsterviel's funding. She was designed to turn people and experiments from good to evil by singing her siren song. 624 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.

Lilo & Stitch The Series
In her episode. She got activated from Lilo and Stitch and become in love with Stitch so she can help to turn the clone experiments back to normal from her clone. Until Icero is telling her and everyone that he was saved from Angel-Clone and turn the clone experiments back to normal again then they got out of the ship and Treca is happy seeing Icero is safe. But Gantu just capture Angel-Clone and taking back to Malco, Icero is very sad that Angie is captured but Treca cheered Icero and promise him to get Angel-Clone back. So Lilo, Stitch, and Angel are all agreed to get Angel-Clone back.