Mike Gröger was drummer in Vienna based hardcore group Only Attitude Counts. Gröger joined the band after initial drummer Tommy E.B. had departed.



Other past bands include Bloo VooDoo, Raventhrone, Mudbreed, Collapse 7, and The Legendary Daltons.



In 1997 Mike Gröger showed up in psychobilly outfit Thee Flatliners, replacing Wolfgang Hummel (formerly of The Cryptkickers).



Mike Gröger is also playing in Austrian symphonic black/death metal band Hollenthon, formed by Martin Schirenc of Pungent Stench repute.



Mike Gröger is also known as drummer with Solrize, and Los Tres Hombres.



When the band Pungent Stench reunited after a six-year break, the line-up featured Mike Gröger on drums using the moniker of Mike G. Mayhem.