Acheron, referred to as an "IX Emanator of Abundance," is portrayed as a "Self-Annihilator" born from the void. Armed with a sword capable of dissecting the "path of life," she embarks on a lonely journey through the universe, seeking vengeance for reasons shrouded in mystery. 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.