Drummer known for being a member of the rock band 30 Seconds to Mars who has also pursued other artistic outlets, including abstract visual art and writing.
He appeared on an episode of My So-Called Life. He formed 30 Seconds to Mars in 1998.
He has been influenced by Keith Moon. He founded the direct-trade coffee company Black Fuel Trading Company in 2014.
He and Tomo Milicevic have been bandmates in 30 Seconds to Mars.