Charlie Chaplin. Charlie Chaplin was 25 in His Prehistoric Past as 'Weakchin'.
Mack Swain. Mack Swain was 38 in His Prehistoric Past as 'King Lowbrow'.
Gene Marsh. Gene Marsh was 21 in His Prehistoric Past as 'Sum-Babee'.
Fritz Schade. Fritz Schade was 34 in His Prehistoric Past as 'Ku-Ku aka Cleo'.
Cecile Arnold. Cecile Arnold was 21 in His Prehistoric Past as 'Cavewoman'.
Al St. John. Al St. John was 21 in His Prehistoric Past as 'Caveman'.
May Wallace. May Wallace was 37 in His Prehistoric Past as 'The Queen'.Ted Edwards. Ted Edwards was 30 in His Prehistoric Past as 'Caveman (uncredited)'.
Vivian Edwards. Vivian Edwards was 18 in His Prehistoric Past as 'Cavewoman (uncredited)'.Charles Lakin. Charles Lakin was >> in His Prehistoric Past as 'Caveman (uncredited)'.Grover Ligon. Grover Ligon was 29 in His Prehistoric Past as 'Caveman (uncredited)'.
Frank D. Williams. Frank D. Williams was 21 in His Prehistoric Past as 'Caveman (uncredited)'.Billy Gilbert. Billy Gilbert was 23 in His Prehistoric Past as 'Caveman Masher (uncredited)'.Charlie Chaplin. Charlie Chaplin was 25 in His Prehistoric Past as 'Director, Writer, Editor'Frank D. Williams. Frank D. Williams was 21 in His Prehistoric Past as 'Director of Photography'
Mack Sennett. Mack Sennett was 34 in His Prehistoric Past as 'Producer'