Watch Mark Hamill Answers the Web's Most Searched Questions, Autocomplete Interview

How did Harry know about the double agent in Kingsman: The Golden Circle? - Quora

Kingsman: The Secret Service [Blu-ray] : Movies & TV

It's Mark Hamill updated his cover photo. - It's Mark Hamill

Mark Hamill features in new Kingsman still – Moviehole

Mark Hamill Joins Bert Kreischer In Legendary's 'The Machine' – Deadline

In Kingsman: The Secret Service the graphic novel, Mark Hamill is featured as a kidnapped celebrity, in the movie, Mark Hamill himself plays a character named Professor Arnold. : r/MovieDetails

Professor James Arnold – Mark Hamill

Tom Hiddleston And Mark Hamill To Lead Mike Flanagan's The Life Of Chuck

Kingsman': Samuel L. Jackson, Colin Firth on Weapons and Overdue, R-Rated Spy Humor – The Hollywood Reporter

Mark Hamill, DC Movies Wiki