English actor and basketball player Neil Fingleton has died. Named Britain's tallest man in 2007, Fingleton turned professional actor with roles in 2011’s X-Men: First Class and in 2013's 47 Ronin. In what is his best-known turn, he played Mag the Mighty in HBO’s Game Of Thrones. A rep for the actor could not confirm how Fingleton died, although multiple reports say he suffered heart failure on Saturday.