Finnish speed metal band.

History:

1984: Tuomo Lassila (drums, vocals), John Vihervä (bass), Staffan Stråhlman (guitars)

1985-87: Timo Tolkki (guitars, vocals), Tuomo Lassila (drums), Jyrki Lentonen (bass)

1988-89: Timo Tolkki (guitars, vocals), Tuomo Lassila (drums), Jyrki Lentonen (bass), Antti Ikonen (keyboards)

1989-93: Timo Tolkki (guitars, vocals), Tuomo Lassila (drums), Antti Ikonen (keyboards), Jari Behm (bass)

1993-94: Timo Tolkki (guitars, vocals), Tuomo Lassila (drums), Antti Ikonen (keyboards), Jari Kainulainen (bass)

1994-95: Timo Tolkki (guitars), Timo Kotipelto (vocals), Tuomo Lassila (drums), Antti Ikonen (keyboards), Jari Kainulainen (bass)

1995-2003: Timo Tolkki (guitars), Timo Kotipelto (vocals), Jens Johansson (keyboards), Jari Kainulainen (bass), Jörg Michael (drums)

2004: Timo Tolkki (guitars), Jari Kainulainen (bass), Jens Johansson (keyboards), Miss K (vocals)
[this lineup has never released anything nor played any live show]

2005: Timo Tolkki (guitars), Timo Kotipelto (vocals), Jens Johansson (keyboards), Jari Kainulainen (bass), Jörg Michael (drums)

Shortly after the reunion with the "classic" lineup, bass player Jari Kainulainen left the band, being replaced by Lauri Porra from Tunnelvision, so actual lineup is:

Timo Tolkki (guitars), Timo Kotipelto (vocals), Jens Johansson (keyboards), Lauri Porra (bass), Jörg Michael (drums)