Gribbon started in
vaudeville, performing on the Keith, Orpheum, and Pantages circuits, Gribbon's Broadway credits included
Meet a Body (1944),
Mr. Big (1941),
Arsenic and Old Lace (1944),
Delicate Story (1940), and
Alley Cat (1934). Gribbon worked for the
L-KO Kompany. From 1915, Gribbon worked in silent cinema, first at Lubin under the sobriquet 'Rubber-faced Harry', which became 'Silk Hat Harry', when he joined
Keystone later that year as top-hatted, amply moustachioed comic villain. During the sound era, acted in several
RKO/
Pathe short comediesar. ==Personal life and death==