
New York City, New York, USA
Moyer MacClaren Bupp (January 10, 1928 – November 1, 2007) professionally known as Sonny Bupp, was an American child film actor and businessman. His most notable film was Citizen Kane (1941), in which he appears as Junior, Charles Foster Kane III, the eight-year-old son of Charles Foster Kane and his first wife, Emily. Bupp was the last surviving credited member of the Citizen Kane cast at his death.

as Martin Van Buren Aldrich (uncredited)

as Charles Foster Kane III
1941

as Boy in Sunday School (uncredited)
1941

as Martin Van Buren Aldrich (uncredited)
1941

as Chester Platt
1939

as Peter
1940

as Boy Hiding from Policeman (uncredited)
1939

as Little Boy (uncredited)
1937

as Billy Welles
1940

as Billy
1939

as Smallest G-Men Club Member
1938

as Hit-and-Run Victim (uncredited)
1937

as Thomas "Tommy" M. Foster
1939
as Martin Van Buren Aldrich (uncredited)
1941

as Student Fighting with Mickey
1942

as Boy (uncredited)
1941

as Martin Van Buren Aldrich (uncredited)
1941

as Boy in Sunday School (uncredited)
1941

as Young Grat
1941

as Charles Foster Kane III
1941

as Billy Welles
1940

as Newsboy
1940

as Willy
1940

as Freddie Jackson (uncredited)
1940

as Willie Lincoln (uncredited)
1940

as Bobby Mattison
1940

as Peter
1940

as Thomas "Tommy" M. Foster
1939

as Younger Son
1939

as Boy Hiding from Policeman (uncredited)
1939

as Joey Joyce
1939

as Boy in Tree (uncredited)
1939

as Boy Chiseler
1939

as Billy
1939

as Chester Platt
1939
as Sonny the Kid in Hospital (uncredited)
1938

as Monk (uncredited)
1938

as Smallest G-Men Club Member
1938