Medaka is an incredibly beautiful and talented first year student. She became Hakoniwa Academy's Student President as she managed to get 98% of the student body's support. One of her pledges during her campaign was to set up a suggestion box (which later became known as the Medaka Box), along with her childhood friend Zenkichi, goes out to solve any and all problems that comes through.
She is very confident and isn't ashamed of any part of her body at all. She is extremely intelligent and can understand all her subjects well. She has a positive outlook on everyone and everything surrounding her.
Medaka sees it as her job to enhance the national prestige.

Shigure is a 22 year old, mysterious person and a slow talker. She is also a master of all types of weapons and believes that weaponry should be seen as an extension of the body: simply relying on the weapons' strength alone will not make you a master of it. She was initially viewed as a loner, often avoiding interaction with the other residents of the dojo, besides Apachai. However, later in the series, she begins to open up to Kenichi and the others, and even partakes in certain daily rituals (e.g. dinner) with them. She teaches Kenichi how to use weapons and also got him past his fear of people using weapons against him.

Age 17, High School student. Suddenly moved in to Ochiai Kouta house to act as his older sister while his father is away. The reasons are unknown except for the fact that she owes him for the ice cream. She seems to be a great fighter, as she beat up three bullies and a thief. She is immature, but in the end helps Kouta find a solution to his problems.Her specialty is tying cherries with her tongue.

Bridget L. Satellizer is a Sophomore Pandora in training whom is known as the strongest in the Sophomore year at the school Aoi has recently transferred to. She was undefeated in the academy’s carnival battles until Kazuya surprised her with a tear filled hug. She is referred to by the other students as ‘The Heartless Witch’ and ‘The Untouchable Queen’, due to her anti social behaviour and her reaction to being touched. Rumour has it that Bridgette has killed over 20 Pandora and Limiters who dared touch her, and that she does not have a Limiter because of her cruel treatment of them. Because this, she seen as a violent psychopath and her fellow students are scared of her. Her bolt weapon is a blade-like weapon.