The Cenobites are extradimensional beings who appear in the works of Clive Barker, including the novella The Hellbound Heart and the nine Hellraiser films. They are also mentioned, in passing, in the novel Weaveworld, in which they are referred to as “The Surgeons.”
The Cenobites vary in number, appearance, and motivations depending on the medium (film, comic book, etc.) in which they appear. The involvement of multiple parties in the production of Hellraiser films and comics (many eschewing the creative supervision of Clive Barker) has led to varying levels of consistency regarding the canonical aspects of their philosophies and abilities. The only constants are that they take the form of ritually mutilated creatures with varying degrees of human characteristics, and that they can only reach Earth's reality through a schism in time and space, which is opened and closed using an innocuous-looking puzzle box called the Lament Configuration.