Ragyou Kiryuuin

Satsuki's mother and one of the main antagonistic forces of the series.

She is the CEO of REVOCS, a global clothing distributor, and also the current head of the Kiryuuin family. Her goal is to control all of Japan and the global market.

Revealed later on to also be the mother of Ryuko, when she becomes the main antagonist of the series rather than Satsuki.