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.
His younger brother, musician and actor Jared Leto, who is also in 30 Seconds to Mars.
He and Tomo Milicevic have been bandmates in 30 Seconds to Mars.