AM I BLOOD was previously known as ST. MUCUS upon their formation in Kerava during 1990. In this guise the band issued two albums 'Natural Mutation' in 1995 and 'Am I Blood' on the Stupido Twins label. This latter album would be repackaged as the debut AM I BLOOD release by Germany's Nuclear Blast label. The band all adopted anglicized surnames for later releases. Frontman Janne Kerminen became simply J. Cermine, guitarist Pekka Kulmala was known as Pexi Cornely, bass player Toni Grönroos evolved into Tony Greenrose whilst drums were handled by Gary Reini. AM I BLOOD also added second guitarist Hande Lanblade. Both Kerminen and Grönroos also operate in side act N.O. DISCIPLINE.

A new AM I BLOOD EP 'Gone With You' emerged in 2000. That same year the group inducted a new drummer in Jani Stefanovic, a veteran of SABAOTH. Stefanovic subsequently joined Swedish act SINS OF OMISSION and in 2003 founded Christian Death Metal band RENASCENT.

AM I BLOOD signed to the A1 Metal Ltd. label for a 2001 album 'The Truth Inside The Dying Sun'. However, with their label going under and the album receiving minimal promotion, the group re-issued 'The Truth Inside The Dying Sun' in 2005 with new artwork and a revised track order. Band line-up at this juncture comprised Janne Kerminen, guitarists Max Karling and Ilves, bassist Toni Grönroos and Pekka Sauvolainen on the drums.