O – bands. Oz – Finland

Years active	1977–1991, 2010–present
Genres	Heavy metal, Power metal
Current members	Vince Koivula – lead vocals Juzzy Kangas – guitar, vocals Johnny Cross – guitar, vocals Peppi Peltola – bass, vocals Mark Ruffneck (Pekka Mark) – drums, percussion
Former members	Ape De Martini (Tapani Hämäläinen) – lead vocals Markku Petander – guitar Costello Hautamäki – guitar Michael Lundholm – guitar Spooky Wolff – guitar Speedy Foxx – guitar Esa Niva – guitar Kari Elo – guitar Jörgen Schelander – keyboards Jay C. Blade (Jukka Lewis) – bass, vocals Fredrik Thörnholm – bass Tobbe Moen – bass Tauno Vajavaara – bass Michel Santunione – guitar (live member) John Berg – guitar (live member) Johannes Sandberg – bass (live member)
Discography (Studio albums)	Heavy Metal Heroes (OZ) (1982) Fire in the Brain (1983) III Warning (1984) ...Decibel Storm... (1986) Roll the Dice (1991) Dominator (2011) Burning Leather (2011) Transition State (2017) Forced Commandments (2020)

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