Soyer is a Daimon Heart Snatcher sent by Eugeal. She can cause fireworks to make her enemies dance, and trap them inside drums. She appeared in Sailor Moon S Episode 14, Hello, Sailor Mini Moon.

Soyer was created from a drum by Doctor Tomoe, and sent by Eugeal to attack the Sailor Scouts. It was not her who extracted Maya's Pure Heart, but rather Eugeal, who sent Soyer to attack Sailor Moon and Sailor Mars. She nearly defeated them, until Rini arrived as Sailor Mini Moon and attacked her with Pink Sugar Heart Attack, and Sailor Moon finished her off with Moon Spiral Heart Attack.

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