Melascula

Melascula is a snake who turned into a pink-haired naja demon after years of bathing in miasma, and one of the Ten Commandments in The Seven Deadly Sins. She holds the Commandment of Faith, which burns the eyes of anyone near her who doubts their convictions, and she raises the souls of the dead into a zombie army. Chasing the revived Elaine with Galland, she gets drunk on the beer at Escanor's bar and is badly burned trying to swallow Escanor's soul. Ban later dislocates her jaw and destroys most of her hearts. Sent to Coland to hold a barrier around Camelot, she is defeated and purified back into an ordinary snake by Elizabeth, and Merlin keeps her in a test tube. In Four Knights of the Apocalypse, King Arthur restores her with the power of chaos; beaten by Tristan, she fuses with Galland into Melagalland.