Mrs. Regendorf is the mother of Akira and Yuuhi is the wife to Wolfgang Regendorf. Due to the physical toll of giving birth to two werewolves, she is now in a wheelchair. She seems to have a good relationship with Mina.
Mrs. Regendorf seems to be a beautiful woman in her late 30's -- early 40's. She has messy, medium length dark hair with a side-swept fringe, with soft eyes.