Cyrus Bolooki (born 27 February 1980) is a musician of Iranian descent and the band's drummer. Preceded by the departure of Joe Moreno in 1997, Cyrus is still considered the "new guy" by his band mates, who originally asked Bolooki to play after hearing him at a talent show while playing in a different band.
Bolooki currently plays on Orange County Drum and Percussion drums, Remo Heads, Drum Workshop Hardware and Zildjian Cymbals. He also endorses his own model of Vater drum sticks called "Cyrus Bolooki: The Commander".

He performs on a snare drum decorated with characters from the Simpsons that was given to him by his drum tech.