Diane Harlequin is one of the main characters in the anime and manga series Nanatsu no Taizai (The Seven Deadly Sins). She is a member of the Seven Deadly Sins, representing the Sin of Envy with the symbol of the Serpent. Diane is a Giant and serves as the group's powerful warrior, wielding immense strength and controlling the earth through her power, Creation. She is known for her kind heart, loyalty to her friends, and her deep feelings for King, the Fairy King.