designed to use your bright light to pose as a beacon for the Galactic Armada
as a Christmas star.
Topper (Experiment 025) is a small yellow star-shaped creature with a little antenna on his head. Designed to be a beacon to signal the alien attack fleet, but the official Disney website states his purpose is to keep people awake with his bright light. Topper is placed atop the local Christmas tree and emits a light so bright that aliens from other galaxies can see him from Earth. His number is likely a reference to Christmas Day (December 25). He is voiced by Tress MacNeille.