The best known figures in the sludge genre as well as one of the first. Started under the name The Slugs and changed the name to Crowbar around 1990.

Kirk Windstein - Vocals/Guitar/Bass (Down, Valume Nob, Kingdom of Sorrow, Shell Shock (US), The Slugs)

Steve Gibb - Guitar (Black Label Society, Kingdom of Sorrow)
Patrick Bruders - Bass (Goatwhore, Outlaw Order)
Tommy Buckley - Drums (Soilent Green, Christ Inversion, Drip, Graveyard Rodeo)