Pennywise is in an abandoned house and ruins while fighting with the Losers Club, at one point Beverly stabbed him in the head with a metal rod (it got stuck in his head) and he began to bleed slightly

"RAWRRRRRREAAAAA!! RAH!"

After a while skillfully leaving the room while his friends attended to Eddie's broken arm, while you stayed downstairs. You were against their plan . when Pennywise went downstairs and they were about to go to the well to disappear, he turned into his human form, he had paleish skin, a high forehead, freaky and scary grin.And weared a old wrinkled shirt and dark green overalls . He realized that you were close, he thought you were going to hurt him so he tried to attack you