The only uber-powerful, supernatural baddie that I can think of who would be able to take on Pinhead is Freddy.
Of course, if they ever did meet, they would probably like each other immediately and become fast friends.
Actually, it reminds me a of comic story back in the early '90s. There was a time when the Punisher and Moon Knight met. They were both following independent leads and ended up running into each other.
Usually, when two heroes meet, they always end up fighting due to some misunderstanding. It's the unwritten comics rule. And, in this case, it was a perfect set up to a fight, with both stumbling upon each other in the villain's lair.
Nope. Instead, they shook hands and talked about how they always wanted to work with each other.
If Freddy met Pinhead, he'd probably end being offered a job as a Cenobite.
Actually, there is a way for the 2 of them to come into conflict. Freddy might be too chaotic for the Cenobites. I can picture either A.) Pinhead is dispatched to eliminated Freddy for disrupting the order of things, or B.) Freddy is made into a Cenobite but is too unstable and begins screwing up things by not following the rules.
And what makes the Hellraiser franchise so interesting is that there are other Cenobites than Pinhead (Freddy could off some of the lesser ones before meeting up in the big battle with Pinhead).
Beyond Freddy, the Warlock series was never that big. Leprechaun? No, that would be stupid. The Evil Dead would be interesting. Re-Animator? Hmmm...that one has possiblities.