It Chapter 1 & 2: Every Monster Explained & Ranked
9. Dead Hockstetter
Hockstetter is one of the most under-used parts of the second film, even though he's a totally unnecessary part of the whole thing. Rather than being a projection of fear, the dead kid from the first movie comes back - in zombie form, of course - to help facilitate Henry Bowers' escape from his psychiatric hospital.
We don't actually learn much about Bowers between the movies - only that he wasn't killed and was locked up, subsequently losing his mind (presumably thanks to what It did in there) and remaining wholly driven by his need to kill the Losers. None of this is really expressly said, but it's there between the lines.
He only escapes thanks to the zombified remains of his mate Patrick, who appears all Walking-Dead like and gives him his trusty knife to help him stab his nurse and escape. He looks great, he's a weirdly effective gag haunting and if it wasn't for the fact that the film totally forgets about him after turning him into Bowers' chauffeur, he'd be way higher.