Isaac C. Singleton Jr.

Isaac Charles Singleton, Jr. is an American actor. He is best recognized for portraying the irate air marshal in Anger Management and the pirate Bosun in Pirates of the Caribbean The Curse of the Black Pearl. He also voiced the villainous Thanos in the television programs Guardians of the Galaxy and Avengers Assemble, as well as the video game Lego Marvels Avengers.

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Source: Wikipedia