A drifter claiming to be a Galaxy Ranger. She goes by Acheron and walks the cosmos alone, carrying with her a long sword. Acheron is a tall woman with pale skin, long dark purple hair that covers the left side of her face, and bright violet eyes with pink highlights and diamond shaped pupils. A cold and silent intergalactic ronin, an ascetic imperial maiden. She has embarked on a lonely journey for vengeance, but still seems to have goodness in her heart. Her true name is Raiden Bonsenmori Mei.