Ross Hagen (born Leland Lando Lilly; May 21, 1938 – May 7, 2011) was an American actor, voice actor, director, screenwriter and producer whose television acting credits included Daktari.^[1] His film credits included The Hellcats in 1967 and The Sidehackers in 1969.^[1] His video game credits included Red Dead Redemption and its expansion pack Undead Nightmare.

Hagen was born in Williams, Arizona, on May 21, 1938.^[1] However, he was raised on an Oregon farm.^[1] Hagen and his first wife had two children, Bob Lilly and Julie Lilly-Beloit.^[1] He was married to his second wife, Claire Polan, an actress from 1963 until her death in 2003.^[1] Outside of acting, Hagen also served in the United States Army.^[1]

Hagen began his acting career during the 1960s. His early career included guest appearances on The Virginian, The Big Valley, and Here Come the Brides".^[1] He was cast in the CBS television series Daktari, in 1968.^[1] He portrayed a safari photographer named Bart Jason until the end of the show in 1969.^[1] Hagen's other film credits included The Mini-Skirt Mob and Speedway in 1968, The Devil's 8 (1969), The Organization (1971), Angels' Wild Women (1972), Melinda (1972), Wonder Women (1973), Night Creature (1978), Angel (1984), Avenging Angel (1985) and Armed Response (1986).^[1] His other credits as a director and producer have included Reel Horror, The Media Madman and Time Wars.^[1] He also starred in Dinosaur Island and Fugitive Rage, both directed by Fred Olen Ray.

Hagen also played Landon Ricketts, a retired gunslinger, in the video games Red Dead Redemption and Undead Nightmare.^[2]

Ross Hagen died of cancer at his home in Brentwood, Los Angeles, on May 7, 2011, at the age of 72.^[1]

A location in 2018 video game Red Dead Redemption 2, the prequel to Red Dead Redemption in which Hagen starred in, was named Mount Hagen in the late actor's honor.

• Ross Hagen at IMDb