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Hobbs' Angel of Death are an Australian thrash metal band that began in the mid 1980s and continue to this day, together with Mortal Sin they are one of the earliest successful Australian thrash metal bands. The band began in 1985 as a solo project for ex-Tyrus guitarist Peter Hobbs, with the help of ex-Nothing Sacred members Mark Woolley (guitar), Sham (drums) and Karl Lean (bass), who recorded a number of demos which attracted interest from overseas labels.

There are mutliple artists with this name: 1) Fuck Off is a split-up Spanish thrash metal band formed in 1986. They have two full length releases: Another Sacrifice and Hell On Earth. After Hell On Earth the band split-up in 1991. Josep Casas moved to a thrash band called Barbarian.

2) Fuck Off is a swedish constellation with Stefan Sundström, Johan Johansson & Guld-Lars (both from the Swedish punk band KSMB), Pappa Mats and maybe some other members.

Mortal Sin is a thrash metal band that formed in 1985. The group formed around singer Mat Maurer and drummer Wayne Campbell in Sydney, Australia. At first Campbell had attempted to get Maurer into another band called Wizzard but the rest of that band was reluctant to support the idea so the pair struck out on their own, quickly recruiting Wizzard's guitar Keith Krstin, bass player Andy Eftichiou from a band called Judge and a second guitarist Neville Reynolds. Reynolds was fired for not being available to play at the band's very first show and was replaced by Paul Carwana.