Topper

Topper, A.K.A. Experiment 025, is an illegal genetic experiment created by Jumba Jookiba. He is designed to use his bright light to pose as a beacon to the Galactic Armada. His one true place is as a Christmas star.Topper is voiced by Tress MacNeille.

Bio
Experiment 025 was the 25th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to give off a bright light with which to pose as an invasion-signalling beacon to the Galactic Armada.

025 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.

Lilo & Stitch: The Series
025's pod was found by Gantu on Christmas Eve, and sent as a Christmas present meant for Hämsterviel.

However, due to a mix-up, the pod instead landed in the hands of a little girl.

When Lilo, Stitch, Jumba and Pleakley located the pod and discovered 025 to be harmless, Lilo activated 025 in a fountain. She then named him Topper, and gave him a one true place atop Christmas trees as a Christmas star, while Topper's bright light unintentionally signalled the Galactic Armada.

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

Topper did participate 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.