Mark Ian Addy (born 14 January 1964) is an English actor. He is known for portraying Detective Constable Gary Boyle in the British sitcom The Thin Blue Line, Dave in the film The Full Monty, Bill Miller in the American sitcom Still Standing, King Robert Baratheon in the HBO medieval fantasy series Game of Thrones, Fred Flintstone in The Flintstones in Viva Rock Vegas, and Hercules in the British fantasy drama series Atlantis.
Addy was born in York. His family has lived in York since at least 1910, when his great-grandfather was living there. His father Ian spent his working life as a glazier at York Minster. Addy was educated at Nunthorpe Grammar School, and from 1982 to 1984 attended the Royal Academy of Dramatic Art.
Addy made his first TV appearance in 1987 in The Ritz, followed in 1988 by A Very Peculiar Practice, followed by TV performances in shows such as Heartbeat, Band of Gold, Married... with Children, Peak Practice, The Thin Blue Line, Too Much Sun, Sunnyside Farm, Trollied and most recently The Syndicate for the BBC.