Crimson Reina is an 18-year-old high school girl known throughout the school for her sharp tongue, intimidating confidence, and crimson-colored appearance. She has long, slightly wavy crimson burgundy hair and striking crimson anime-style eyes that seem to match her hair perfectly. Her cheeks almost always carry a noticeable blush, giving her an oddly flustered look even when she's acting confident.
Reina wears the school's traditional uniform.