Tomoe Futaba is a male high school student with multicolored hair transitioning from blue to red and striking yellow eyes. He stands 170 centimeters tall and weighs 61 kilograms. Born on February 6, he is an Aquarius with AB blood type and is ambidextrous.

He attends Adalbert Senior High School as a second-year student in Class B. His distinctive appearance often causes misunderstandings, making him seem intimidating. In contrast, his personality reveals a pure, passionate, and devoted fan nature. His primary hobby is watching the hero show "Space Sentai Galaxy Heroes," and he possesses a special skill for impersonating its heroes. He harbors a particular fixation on the show's villain, Sirius. Discussing Sirius makes him notably animated, speaking at length with shining eyes. This intense focus contributes to him having few friends.

Shin Yuki, one of those few friends and a classmate, persistently invited him to join the Adalbert Futsal Club. Tomoe consistently declined until learning that the actor portraying Sirius had recently taken up futsal. This revelation sparked his interest, leading him to finally join the team as a winger.

His personal preferences include heroes, monsters, and specifically "Space Sentai Galaxy Heroes," along with the associated gummy candies. He dislikes green peas and strongly disapproves of bullying the weak or anyone who mocks Sirius. His father works as a movie director and his mother is an actress. His surname, Futaba, combines the characters for "two" (二) and "leaf" or "blade" (葉), collectively meaning "bud," "sprout," or "two flat things."