Sailor Moon's Moon Princess Halation
Udering is a Droid sent by Esmeraude to fill a vulnerable spot in Tokyo with dark energy. She attacks by throwing energy rings at her enemies that can make them suffer their worst nightmares, turn against one another, feel isolated from the world, or make friends hate each other.
The vulnerable spot Esmeraude attacked was a bracelet shop, where people were making love bracelets. Udering disguised herself as the teacher there, and charged the bracelets with dark energy so that whoever wears them will be contaminated with dark energy until the city is full of dark energy. When Chibiusa Tsukino put Usagi's love bracelet on, Usagi realized what was going on, so she and the others transformed into the Sailor Senshi to fight Udering. Every time Udering tried to use one of her evil rings at Sailor Moon, Tuxedo Mask and the other Sailor Senshi would arrive and stop her. Sailor Moon eventually destroyed Udering with Moon Princess Halation.
- Uderingu is a pun on 腕 (ude), which means "arm," and リング (ringu), which means "ring."
- Udering's hatred rings look identical to the Olympic rings, minus the color.
- Her name was Regalia in the DiC dub.