1996- Imaginery - guitars, keyboards  
1998- Casus Belli - keyboards  
1999-2005 Nightfall - guitars  
2000 Acid Death - keyboards  
2002- Bob Katsionis - keyboards, guitars  
2004- Firewind - keyboards, additional guitars  
2009- Outloud - guitars, keyboards  
2010 Revolution Renaissance - keyboards  
2015- Serious Black - guitars  
Live musician:
2003 Septicflesh - keyboards  
Guest musician:
2001 Francesci Fareri - keyboards  
2002 Star Queen - keyboards  
2005 Francesco Fareri - keyboards  
2007 Francesco Fareri - keyboards  
2008 Power Quest - keyboards  
2010 Pathfinder - keyboards  
2011 Virtual Mind - keyboards  
2011 Scar Of The Sun - keyboards  
2011 Eldritch - keyboards  
2011 Christian Muenzner - keyboards  
2012 Francesco Fareri - keyboards  
2015 George Kollias - guitars  

Personal information

Born on: 17.02.1977

Babis "Bob" Katsionis, born February 17, 1977 in Athens, Greece, is the keyboard player for the heavy metal/power metal band Firewind. Bob has appeared in various small-time bands over the years (most of them projects he developed himself) before gaining more recognition with the likes of Firewind and Imaginery.

As well as playing keyboards, Bob is also a very skilled seven string guitar player and has played both instruments in his various bands - when Firewind play live he performs in a dual role as keyboard player or rhythm guitarist (or both), depending on the individual song. He uses a standard six string guitar in these circumstances.

Bob also has an instrumental solo project - so far two albums have been released. They style of music is jazzy Neo-classical/Progressive Metal.