Rizuna Ann (安 梨鶴奈, An Rizuna) is a supporting character in Alice in Borderland. Her specialty is Diamonds(♦️). She is portrayed by Ayaka Miyoshi.
Ann is a tall, slim young woman with short black hair and brown eyes. She is usually seen wearing a white tied button-up shirt and navy-blue shorts. One of the accessories that makes her stand out is a pair of sunglasses that she often wears even inside the building.
Ann is one of the more intelligent characters, as demonstrated during the Witch Hunt game, where she used her forensics skills, as well as one of very perceptive ones, as she she quickly figured out how to solve the "Light Bulb" puzzle, even though refused to reveal the answer. She remains calm and cold, rarely showing her emotions regardless of the situation, and is never intimidated even if her life is in danger, either during a game or because of another player.
Additionally, Ann is shown to be very decisive and brave, as she comes for others in a car to save them from the King of Spades, and then follows her own hunch outside of Tokyo.
Before coming to the Borderlands, Ann was part of the forensics department in the Tokyo Metropolitan Police. As shown in flashbacks, she was one of the first members invited by Hatter to the Beach. Her experience in the games gave her the position as one of the executive members of the organization, and her direct and strict personality quickly earned her Hatter's trust.