Claim: Boris Karloff acted solely in action films.
Evidence: William Henry Pratt -LRB- 23 November 1887 -- 2 February 1969 -RRB- , better known by his stage name Boris Karloff , was an English actor who was primarily known for his typecast roles in horror films that depicted the characters Frankenstein and The Mummy.
Frankenstein is a 1931 American pre-Code horror monster film from Universal Pictures directed by James Whale and adapted from the play by Peggy Webling -LRB- which in turn is based on the novel of the same name by Mary Shelley -RRB- , about a scientist and his assistant who dig up corpses to build a man animated by electricity , but his assistant accidentally gives the creature an abnormal , murderer 's brain.
The Mummy is a 1932 American pre-Code horror film directed by Karl Freund.