"Those dreams were so strange," he said. "Either I was confronting Pennywise and I was upset with him, yelling at him — or I was Pennywise, but I was walking around in the streets that I grew ...

However, in It, the Losers’ Club “defeated” Pennywise with The Ritual of Chüd and, eventually, smashing its heart into pieces. Now whether or not Pennywise is actually dead is complicated.