Acheron is a tall woman with pale skin, long dark purple hair covering her left face side, and bright violet eyes with pink highlights. She wears a black crop top, a white and purple jacket reminiscent of a kimono, and short black and purple shorts. Her attire is adorned with purple flames, and she has a red and purple flame tattoo on her thigh. Chitinous accessories like a shoulder guard, belt, and spine strap complement her look, along with a large sword resembling an ōdachi.
