Ain is the second-in-command[2][3] and vice-admiral of the Neo Marines and a former member of the Marines.[1] She is a major antagonist of One Piece Film: Z.Ain is a slender, curvaceous young woman with reddish-brown eyes and dark blue hair framing her face, which is held back with a hairpiece in the same upside-down Marine symbol that Z uses. Like Z, she wears a black and gold captain's coat, while underneath her clothes appear quite formal due to her high heels, black leggings, and brown top and skirt. She also wears a large white bow on the front of her collar. When she was a marine, she wore a sleeveless shirt with a tie. She is rather strict and serious at all times. She rarely shows emotions though she was concerned about her mentor when he was in danger, and she was seen crying when Z was killed by the Marines. Like the rest of the Neo Marines, she fully supports Z's plans despite the risks. She greatly respects Z, having been trained by him and having served under him while still in the Marines, as she refers to him as "Z-Sensei". Her respect is so much so that she defected from the Marines to join his cause, which led them to become criminals in the eyes of the World Government. She is very fond of him, showing concern whenever Z is involved. When Z choose to stay back to buy time for the Neo Marines and the Straw Hat Pirates to escape, she attempted to aid him but Kuzan created a wall of ice, blocking her from helping Z.