Member:
1977-1987 Satan's Host - vocals (as Leviathan Thisiren)  
1981-1986 Jag Panzer - vocals  
1987-1996 Titan Force - vocals  
1996-2011 Jag Panzer - vocals  
2007- Titan Force - vocals  
2010- Satan's Host - vocals (as Leviathan Thisiren)  
Live musician:
1986 Riot V - vocals  
Guest musician:
2013 Crystal Viper - vocals