Hartenberger spent the majority of his life as an actor and voice talent. He was known to his friends and family as "Bob". Bob graduated as a high school student in 1960 from California's San Pedro High School and joined the United States Army where he was stationed in Ethiopia as a Military Police officer. Following his discharge, he went on to obtain his AA in Theatre Arts from Los Angeles Harbor College in 1968 and his Bachelor of Arts degree in Communications from Southern Utah State College in 1976. Bob enjoyed a long and varied career in acting; on stage, on screen, and as an incredibly gifted voice talent Bob was known for his great skill and professionalism.

Full Metal Jacket
1987 · as Parris Island Recruit and Vietnam Platoon

The Darkling
2000 · as Uncle Bob

Nashville Grab
1981 · as Guard Conlon

The Testaments of One Fold and One Shepherd
2000 · as High Priest #2

Anya's Bell
1999 · as Mr. Taft

Before He Wakes
1998 · as Adam Michaels

Perfect Murder, Perfect Town: JonBenét and the City of Boulder
2000 · as Bryan Morgan

Child Bride of Short Creek
1981 · as Atty. Gen. Ross

Side by Side: The True Story of the Osmond Family
1982 · as Ring Announcer

American Prophet: The Story of Joseph Smith
1999

The Ministry of Paul
1991 · as Narrator (voice)