Known for his explosive, multi-textural playing style, Theodore was a member of both Golden and Royal Trux before joining The Mars Volta in 2001.

Theodore subsequently formed a collaboration with Rage Against the Machine vocalist Zack de la Rocha, entitled One Day as a Lion, and performed on Incubus frontman Brandon Boyd's solo album, The Wild Trapeze (2010).

[1] In 2013, Theodore joined Queens of the Stone Age, replacing longtime drummer Joey Castillo after he was fired by Josh Homme.

He also listened to a great variety of music, growing to love the likes of Billy Cobham, Elvin Jones and John Bonham.

It was during this time that he met Cedric Bixler-Zavala and Omar Rodríguez-López, who were performing their first gig with their experimental dub band De Facto in El Paso, TX.

They became friends and the former At the Drive-In duo would later invite Theodore to join their Latin-tinged progressive rock band, The Mars Volta.

"[6] Theodore has also completed a collaboration with Zack de la Rocha of Rage Against the Machine entitled One Day as a Lion.

[7] In January 2012, he joined Giraffe Tongue Orchestra, replacing fellow former Mars Volta drummer Thomas Pridgen.

A press release from the band Queens of the Stone Age revealed that Theodore would contribute drums on their upcoming album ...Like Clockwork.

"[11] He has also been heavily inspired by John Bonham of Led Zeppelin: "He had one of the best feels in the history of rock ... because [of him] I try and play with as much bombast as I possibly can.

"[11] Theodore has also mentioned the following drummers and musicians as influences: Elvin Jones, Neil Peart, Keith Moon, Phil Rudd, Tony Williams, Sebastian Thomson, Tim Soete, Herbie Hancock, Doug Scharin, Joseph "Zigaboo" Modeliste, Mitchell Feldstein, Damon Che, Dale Crover, John McEntire, Ryan Rapsys and Brann Dailor.