Ethan John Luck (born October 16, 1978) is a guitarist, photographer and drummer who has played in many bands, most prominently, the ska band The O.C. Supertones and rock band Relient K. He is also the cousin of Matt Wignall of Havalina. Luck has also made a part-time career as a studio musician working with such people as Aaron Sprinkle, Mark Lee Townsend, Joe Marlet, Neill King, Bill Stevenson, etc.