Mike Portnoy
Portnoy is best known for his work in the band Dream Theater. However, he is currently active in the Neal Morse Band, Flying Colors, Transatlantic, The Winery Dogs, Liquid Tension Experiment, Metal Allegiance, and Sons of Apollo. Portnoy co-founded Dream Theater and left after 25 years of being the soul behind their music.
The Metal Pioneer
Dream Theater was the first band to begin using elements of noise, power-violence, and drone in their metal songs. Portnoy was one of the fastest, most aggressive, and steadiest drummers in modern times. Seriously, he was really that good. Listen to anything by Dream Theater and you'll understand.