Omar Benson Miller (born October 7, 1978) is an American actor. He is known for his work as Walter Simmons on CSI: Miami (2009–2012), as Charles Greane on Ballers (2015–2019), as the voice of Raphael on Rise of the Teenage Mutant Ninja Turtles (2018–2020) and its 2022 film, and on the CBS comedy series The Unicorn (2019–2021).