Mark Camacho (born 12 April 1964, Montréal, Québec) is a Canadian character actor, voice actor, director, and writer, active since 1989. He studied at Champlain College and Concordia University. He is married to actress Pauline Little since 1988; their son Jesse Camacho is also an actor. Beyond live-action, Camacho is best known for his voice work — most enduringly as Oliver Frensky in Arthur (1996–2003), Lyle in Animal Crackers, and Dad in Rotten Ralph — as well as voicing roles in video game franchises including Rainbow Six, Assassin's Creed, and Splinter Cell. His portrayal of President Richard Nixon in X-Men: Days of Future Past earned him the 2015 ACTRA Award for Outstanding Male Performance. His most notable screen roles include President Nixon in X-Men: Days of Future Past (2014) (Hugh Jackman, Patrick Stewart), Richard Riley in Arrival (2016) (Amy Adams, Jeremy Renner), Pittsy in Punisher: War Zone (2008) (Ray Stevenson, Dominic West), Norman in I'm Not There (2007) (Cate Blanchett, Heath Ledger), Guy Tozzoli in The Walk (2015) (Joe Edgerton, Charlotte Le Bon), and Chief Karl Jackson in To Catch a Killer (2023) (Chris Evans, Michelle Monaghan).