Lucifer (リュシフェル, Ryushiferu) (stylized as Λucifer) was a Japanese visual kei rock band, best known for contributing several of their songs to the popular anime, Kaikan Phrase.

[3] They officially debuted on 15 September 1999 with their big hit single Datenshi BLUE, and became increasingly popular thereafter.

Following the announcement, they did their last tour entitled "Lucifer Last Live 2002-2003 Energy" from 16 December 2002 to 10 January 2003, which included 9 shows.

[6] On the first album, the music was written by Takuya Asanuma (Judy and Mary), Chisato (Penicillin) and Ippei and Taizo (Feel) but after that, the members of the band started writing more.

[7] The lyrics on the first two albums were all written by Mori Yukinojo (except for one song on Beatrip, which Makoto wrote).