Sir Hiss.

Sir Hiss is a snake who was one of the characters in Pooh's Adventures of Robin Hood. He was Prince John's assistant and was responsible for hypnotizing King Richard to go on a Crusade. He always like to rub things in on Prince John's failure attempts to capture Robin Hood and Pooh and the others which annoys Prince John. At the end of the film, he, Prince John, and the Sheriff were sent to Jail by King Richard.