Haruka Hoshi manages Team Akira, overseeing its operations and assisting with maintenance and tuning for the team's battle robots. She joined after the team secured their Battle Robot License by defeating Team John, solidifying her role in supporting their tournament efforts. Her duties involve optimizing robot performance for competitions and contributing to upgrades and repairs, working alongside the maintenance robot Sabuto.

She typically sports brown hair styled in two braids. Her distinctive outfit includes a pink dress with a red half-jacket, black or grey leggings, long white socks, and brown shoes. When she temporarily left Team Akira, she changed both her hairstyle and hair color, but reverted to her original appearance upon rejoining.

Her assertive nature occasionally sparks conflicts with Akira and the robots during her management duties, highlighting her active involvement beyond logistical support.