Satan's Host was the band vocalist Harry "Tyrant" Conklin joined after leaving Jag Panzer in 1986. He 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.
