Pennywise is the form that the monster from the film: IT takes usually. He appears as an evil killer clown. He is played by Tim Curry. While in demon form grows razor sharp teeth, claws and glowing red eyes. His main weapon is other peoples fear, he seems to enjoy scaring and stalking prey (people) before actually killing them. Pennywise's favorite prey is children as they are easier to lure and catch. The true form of pennywise is unknown but the film shows a giant spider like alien creature, other websites say that the pennywise is an ancient life form that sleeps for 40 years and wakes up to wreak havoc and eat people. while many believe its a demon, suggesting a more spiritual true form.