Future Mai is a young-looking and tall woman with fair skin. She has dark eyes and long dark hair with bangs. She wears a long, blue jacket along with yellow pants, black boots and a green hat.

She is the leader of the Resistance against Goku Black and one of Future Trunks' closest allies.

Mai is also a kind and selfless person and has shown to also be rather caring towards animals and others, giving food to Future Scratch the cat and insisting that Trunks eat the whole can of food given to him; along with the lives that were saved by her. Mai is also on good terms with Future Bulma and appears to be good with children, showcased by the young orphans Haru and Maki being comfortable around her

Mai displays an aptitude for leadership, as she leads her troops and constantly boost their "morale" during their many fights against Goku Black, telling them to never give up in the face of despair. After Zamasu completely eradicated the rest of humanity, she was overcome with grief and shoots at the bodiless entity continuously in anger until running out of ammo.

Future Mai has a good relationship with Future Trunks, even putting him over herself. After seeing him weep, Mai teased Trunks by saying that men shouldn't show their tears. However, they both care greatly for one another and both are willing to risk their own lives each other. Though she is not as powerful as Future Trunks, Future Mai is quite brave willing to stand and fight against Goku Black and Future Zamasu using tactical assaults though she knows when she and the Earth's Resistance are out matched and tends to leave most of the fighting to more capable warriors such as Future Trunks,

Following the Androids being destroyed by Future Trunks, Goku Black appears and causes destruction to the planet, Mai eventually became a member of the center of the organized forces that resisted against him, meeting Future Trunks in doing so. In one of his attacks, Mai is part of an effort to corner Goku Black, directing her comrades to fire more bullets at him and setting off a detonator that causes the buildings around Goku Black to fall on top of him, leading Future Mai to believe he was destroyed. However, Goku Black reveals himself to be unfazed by the attack and engages Future Trunks, knocking him down and charging at him as Future Mai launches a flash grenade to temporarily blind him while she aids Future Trunks in escaping the scene. She then nurses him, much to Future Trunks' reluctance. She calls him the only hope of the people of Earth and encourages him to continue fighting for their sake.

Mai was an old woman when the world was put into ruin from the Androids, but due to Emperor Pilafs grand idea, she along with him and Shu gathered the seven dragon balls and asked Shenron to turn them young again, which he agreed, however, The Pilaf Gang were turned into toddlers because Shenron made them way younger than Pilaf's wish for youth intended and their wish turned into the very last one that Shenron ever granted, as mere few minutes later Piccolo died and the Dragon Balls permanently turned to stone. Mai then later loses both Pilaf and Shu due to unknown circumstances but Mai manages to survive the Androids' and regrows into a young woman.