Mother of Ultra (ウルトラの母 Urutora no Haha), with her real name Marie (マリー Marī) revealed by Ultraman Belial, is one of the most important members of the Space Garrison and the medic. She is also the (adoptive) mother of Ultraman Taro and Ultraman Ace, and the wife of Father of Ultra.
The Mother of Ultra wife of the Father of Ultra and the literal mother of Ultraman Taro. The Mother of Ultra (or Ultra Mother) is the chief of the Land of Light's Silver Cross Corps — the Space Garrison's medical division. She is a powerful healer, but also regularly drops advice and combat assistance for her son and husband when necessary.
The Mother of Ultra is one of several Ultras who takes on a human form instead of a host, appearing as a kindly middle-aged woman known only as "the Lady in Green" if she wishes to speak to Kotaro. She is also the medic for the Ultra Brothers, with her powers going up to revival of the recently deceased.