John Gill (born 16 Feb 1937) is an American mathematician who has achieved recognition for his rock-climbing. He is widely considered to be the father of American bouldering.
John Gill has 12 screen credits in a career dating back to 1976. Signature works include John Gill Across Time, Disciples of Gill, Friction Addiction. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.