Bob Harks came from a rather large family where his father was a salesman for oil rig companies and where his mother was a stay at home mother. Throughout his life he was very devoted to his family but like most people, he yearned to get out and see the world. Harks eventually drifted to California where he eventually became a clothing model. Through his connections he established as a model, he was able to get into the Screen Extras Guild where he was actually taken onto location for the movie Bullet. This began what was going to be a very long career in the Screen Extras Guild. Harks came in at the tail end of the television western era, it was only natural for him to find work on the unpaved streets of several television westerns like Bonanza and Gunsmoke. With the downturn of popularity in westerns, Harks made the transition from a cowboy to a detective. Over the next 15 years, he would frequently be seen on shows like Kojak where he'd appear around the squad room and also on shows like Lou Grant where he'd make crosses. In the early 1970s, Harks gained work as a utility stand-in on the Bill Bixby show The Magician and it would be his big break. Both he and fellow Magician stand-in Edna Ryan would later find themselves working on another show Bixby starred in called "The Incredible Hulk." Bixby was very fond of Bob and would frequently have him appear in roles that require Hark to be upgraded to a pay rate than you usual extra role. Harks would usually drive the car that would either pick up Bixby at the end of the episode or he would use his car to pass Bixby's character up as he was hitchhiking to his next destination. After the closing of The Incredible Hulk, Harks got regular work as Bixby's stand-in on the short lived show Goodnight Beantown. As Bixby's career started to wind down, Harks found work as a stand-in on the show Alien Nation and he worked on it for the rest of his career not only appearing in the series but also most of the subsequent television movies. It was during this time that Harks decided to retire and move Wisconsin to be closer to his sister Sue and the rest of his family bringing a 30+ year career to a close.