He is best known for portraying Arthur Morgan through performance capture in the 2018 video game Red Dead Redemption 2, a role which garnered him critical acclaim and numerous accolades.

Clark was born in the United States[1] on July 14, 1978,[2][3] the son of an Irish mother and an Irish-American father.

The family spent each summer vacationing in his mother's hometown of Sligo in Ireland.

[4][5] After living and working in London for a number of years, he relocated to New York City in the early 2010s.

[6] Clark provided the performance capture for Arthur Morgan, the protagonist of the 2018 video game Red Dead Redemption 2.