Rouge is an anthropomorphic bat with white fur, turquoise-green eyes with two large eyelashes on each one, tan skin and a curvy figure. She has large pointy ears, small fangs, a small black nose on her muzzle, a short pointy tail, and a pair of dark purple wings on her back.

For attire, Rouge wears a black bodysuit which includes a skin-tight and strapless low-cut unitard that sports a pink, heart-shaped chestplate outlined with thin white-trimming.