Buster Keaton, Charlie Chaplin and Harold Lloyd were all actors and directors of comedy films with each having a unique trademark seen in their movies.

Buster keyton was most known for physical “slapstick” comedy involving a lot of extreme stunt work usually involving heights an example being three ages(1923) where he attempts to jump from one building to another but fails to do so hitting the wall.

Charlie Chaplin was known for his real world commentary within his films being able to relate toward the average viewer playing poor people in many of his films displaying the issues of living in poverty. As well as playing hitler in the great dictator(1940) where he played with a balloon earth representing peoples fear of him at the time.

Harold Lloyd was known for his intense daredevil characters and stunts similar to Buster Keyton. This can be seen in his film safety last(1923) where a guy bravely and recklessly climbs a building facing many dangers along the way like a plank and getting stuck in rope. This inspired many other filmmakers to make more action packed stories with daring characters.