Mulciber is the name of a character in Paradise Lost. He is the architect of the demon city of Pandemonium. This Mulciber is the same as the Roman god Vulcan above; in John Milton's poem, the pagan gods are all fallen angels.

Mulciber is a fictional Death Eater in the Harry Potter series; see Minor Dark wizards in Harry Potter.

Mulciber is an alternative name of the Roman god Vulcan.