Roidmude 099 (ロイミュード０９９, Roimyūdo Zero Kyū Kyū) was originally a Plain Spider Type (スパイダー型, Supaidā-gata) Roidmude before she achieved her Over Evolved into the Angel Roidmude (エンジェルロイミュード, Enjeru Roimyūdo).

Through copying the form of a psychiatrist named Shouko Hazama, 099 achieved evolution into a Super Advanced Roidmude, Angel. Based on Hazama's theories, she concluded that pea099 copied the form of a psychiatrist named Shouko Hazama, allowing her to achieve a Super Evolution into the Super Advanced Angel Roidmude.

Forming her own renegade faction of Roidmudes, Angel sought to supplant the Heart Roidmude as leader of the Roidmudes and create everlasting peace between Roidmudes and humans by forcing both of them under her control. To achieve this, Angel used her halos to absorb her followers' Roidmude Cores into her own to increase her own power.