The Prince of Liones, Son to a Demon (Meliodas) and a half Goddess and half human (Elizabeth). 
Blue (right eye)
Green (left eye)
Orange (Goddess form)
Black (Demon form)
He's 16 years old
Is a male, but he has long white hair and some of his mother's feminine features. Has a muscular body, not very muscular. one of the Four Knights of the Apocalypse, said to destroy the world. From the anime, The Seven Deadly Sins: The Four Knights of the Apocalypse 
His demon form makes him lack emotions.