A bizarre, often grotesque demon from an alternate dimension, originating from the "Hellraiser" series.

A puzzle box that opens the gateways to hell, from the "Hellraiser" film series.

The delusion of a disordered mind. A phantom. A spirit. A ghost.

A process requiring 1.21 jigawatts in which a Delorean can travel through the fabric of space and time to arrive in the past or future. Only Emmett Brown and Skynet understand this sorcery.