Sir Hiss is a supporting antagonist in "Robin Hood". He is a green snake with the ability to hypnotize others (like Kaa in "The Jungle Book"). He is truthful and complaining. He is the one who hypnotized King Richard into going off on a crusade so his brother Prince John can rule and become the richest individual of England. He wears a hat and a jacket, though he is a snake. He is voiced by the late Terry-Thomas.