It, also known as Pennywise the Dancing Clown and Bob Gray, is the title character and main antagonist of Stephen King's 1986 horror novel It. "It" is a shapeshifting entity who every three decades preys on the local children of Derry, Maine, and, in order to kill them, takes the form of its victims' greatest and most terrifying phobias. "It" can shapeshift, and also possesses a power to control people's actions to achieve evil aims; "It" can take over a person's mind.