Ted Cassidy "Battlestar Galactica: The Complete Epic Series" [1978]), Cassidy can be heard providing temporary voice tracks of the Cylon Imperious Leader, before actor Patrick Macnee was contracted to voice the character. Other film work included his appearances in "Butch Cassidy and the Sundance Kid" (1969), "Mackenna's Gold" (1969), "The Limit" (1972), "Charcoal Black" (1972), "The Slams" (1973), "Thunder County" (1974), "Poor Pretty Eddie" (1975), "Harry and Walter Go to New York" (1976), "The Last Remake of Beau Geste" (1977) and "Goin' Coconuts" (1978). He also co-wrote the screenplay of 1973's "The Harrad Experiment", in which he made a brief appearance. In
Butch Cassidy his brother Mark Parker in a Ford automobile, then drove to the home of their father Maximillian Parker, where Betenson also lived. She reports the elder Parker having said to her "I'll bet you don't know who this is. This is your brother Robert Leroy." Betenson observes that her brother's life was full of regrets, particularly at having disappointed his mother so terribly, with Cassidy having reportedly stated "[A]ll I done [sic] is make a wreck of my life." Betenson claims that Cassidy lived out his years in "the Northwest" and died in 1937, and that the family had agreed