Princess Snow Kaguya

Princess Snow Kaguya, also known as Snow Queen Kaguya is the main antagonist of the movie Hearts in Ice. She is the evil ice queen who plans on turning the Earth icy for a "collection".

She arrived on Earth on an icy comet, intially bringing winter, and eventually intending to freeze Earth and all its inhabitants forever to make it part of her collection.

Kaguya sent her Snow Dancers to invade, but the Sailor Scouts destroyed many of them. Eventually, Kaguya obtained the comet shard from Kakeru Ozora, who believed she was Princess Kaguya from the fairy tale. Kaguya threw the shard into the ocean, beginning the process of freezing the earth.

Sailor Uranus, Sailor Neptune, and Sailor Pluto fought her, and then the other Sailor Scouts, including Sailor Mini Moon, arrived. Kaguya countered Sailor Moon's Rainbow Moon Heartache after she transformed into Super Sailor Moon, so she decided to use the Silver Crystal instead. To keep this from killing Sailor Moon, all nine Sailor Scouts combined their power to unleash the full effects of the Silver Crystal in an attack called Silver Crystal Power, destroying Kaguya, her Snow Dancers, her ice crystal, and her comet.

Trivia

 * Kaguya is based on Princess Kaguya from the fairy tale, The Tale of the Bamboo Cutter. A common element in various other anime series.
 * Princess Snow Kaguya could also be a reference to the "Snow Queen"; a fairy tale written by Danish author: Hans Christian Andersen.