Who is the main antagonist character in the 1987 horror film "Hellraiser"?

Pinhead (also known as Lead Cenobite or the Hell Priest, among other names and titles) is a fictional character and the main antagonist of the Hellraiser franchise.

The character first appeared as an unnamed figure in the 1986 Clive Barker (novella) "The Hellbound Heart". When Clive Barker adapted the novella into the 1987 film "Hellraiser", he referred to the character in early drafts as "the Priest" but the final film gave no name. The production and make-up crew nicknamed the character "Pinhead"—derived from his bald head studded with nails.

Pinhead is one of the leaders of the Cenobites, said to be humans who were later transformed into demonic creatures blindly devoted to the practice of experimental sadomasochism. They exist in an extra-dimensional realm that is Hell or one of many versions of Hell that co-exist. Cenobites are usually only summoned to Earth through puzzle boxes.