There are multiple artists with this name:

1) The Demon is a gothic rock band from Vilnius, Lithuania.

2) The Demon (or just Demon) are an English rock group, formed in 1980 by vocalist Dave Hill and guitarist Mal Spooner, both hailing from Leek, Staffordshire. They drew their initial audience from the New Wave of British Heavy Metal movement in 1980.

The original line-up was completed by Les Hunt (rhythm guitar), Chris Ellis (bass guitar) and John Wright (drums). The band were signed by Mike Stone's CLAY Records in 1980 and LICENCED to Carrere Records to join their stable of metal bands. Their debut album, Night of the Demon, was released in 1981.
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