Little is known about her as of yet except that she is the pilot of the Provisional Evangelion Unit-05 which differs from previous incarnations drastically featuring four mechanical \"legs\" that end in wheels and a lack of hands which have been replaced with a jousting lance and \"claw\".

Because of its unique design, Mari pilots her Eva wearing a helmet-like contraption and her plugsuit is equipped with several attachments that connect to tubing that apparently help her in moving the Evangelion. Mari\'s designation amongst the other Children has yet to be revealed. She self destructs Unit-05 to defeat one of the Angels in the film\'s opening but manages to escape unharmed. During the film\'s climax she steals Unit-02 to battle the 10th Angel.