Member:
1988-1990 David Lee Roth - bass  
1990-1996 Joe Satriani - bass  
2002-2004 Joe Satriani - bass  
2008 Joe Satriani - bass  
Studio musician:
1991 Lita Ford - bass  
Live musician:
2003 Ringo Starr - bass  
Guest musician:
1996 Jason Becker - bass  
2008 Jason Becker - bass