Formed in 1977 in Boulder, Colorado.

Satan's Host was a side project of the Jag Panzer vocalist Harry "Tyrant" Conklin, who used the name Leviathan Thisiren to fit the image of the band. He sang on the only official album called "Metal from Hell" as well as on the never released second album that was supposed to be named "Midnight Wind." The band broke up in 1987/88 after Harry left to join Titan Force.

After they renuited in the 90's they began playing Blackened Death metal with huge influence from Mercyful Fate.

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