<P> The studio is perhaps best remembered for the era under Mack Sennett when he created the slapstick antics of the Keystone Cops , from 1912 , and for the Sennett Bathing Beauties , beginning in 1915 . Charles Chaplin got his start at Keystone when Sennett hired him fresh from his vaudeville career to make silent films . Charlie Chaplin at Keystone Studios is a 1993 compilation of some of the most notable films Chaplin made at Keystone , documenting his transition from vaudeville player to true comic film actor to director . In 1915 , Keystone Studios became an autonomous production unit of the Triangle Film Corporation with D.W. Griffith and Thomas Ince . In 1917 , Sennett gave up the Keystone trademark and organized his own company . </P>
who was the creator of keystone film corp and specialized in slapstick comedy films
Mack Sennett