Moyu Miyama is a wealthy student at Golden Star Academy, initially coming across as snobby and rude due to her affluent upbringing. She is chosen by the Greek goddess Aphrodite to transform into Venus Red, one of five warriors defending Earth from the Inma Empire, marked by a Venus symbol on her buttocks.

As Venus Red, she fights in a white sailor suit, sporting red visor glasses, gloves, and shoes. Physically, she possesses hip-length dark blue hair, typically worn in a ponytail, and dark red eyes. While her initial aloofness lessens significantly after joining the Venus team, making her more approachable and integrated, she retains moments of occasional rudeness intertwined with emerging kindness.

Her character development focuses on evolving from a standoffish rich girl into a cooperative team member actively contributing to the group's battle against the Inma Empire.