Harold Ramis

American actor, writer and director (1944 to 2014) who collaborated with Aykroyd on the Ghostbusters screenplay from Aykroyd's original 1983 treatment, played the character Egon Spengler in the 1984 film, and directed extensively across the comedy genre across the following three decades. The collaborator who shifted Aykroyd's original occult treatment into the studio-comedy register the film eventually occupied.