KARL MALDEN'S NOSE! AHHHHH! </MST3K>
Sorry, sorry. Couldn't resist. Godzilla Genealogy Bop moment.
As for the question, I'd say, well, all of them. Though I think Pinhead specifically cuz of the whole "sending your soul to eternal damnation" thing. Sounds like, ya know...painful and stuff. That's a thing he does, correct? I sadly have yet to watch a Hellraiser film in its entirety.

I had nightmares about Predators coming after me once. That I did not like. eek!