Rouge Koumori is a petite, curvy bat covered in soft gray-white fur. She has large bat ears with tan insides, and dark-pink wings. Her striking blue eyes are framed with lavender eyeshadow and mascaraed eyelashes. While she lacks bangs, her shoulder-length hair fans out behind her in a distinctive style. She wears a purple off-the-shoulder crop top with a pink heart over her bust, loose navy slacks with blue flowers on the shins, pink-trimmed gauntlet-style gloves, and stylish wedge sneakers.