Mapson has over 22 years of experience In the film and TV industry. As an actor, he has played a cop, sheriff, guard, detective, soldier, biker, bouncer, gold miner, and gang member. His new upcoming film "All that I Need" that Mapson co-stars in was shown at the Cannes Film Festival. Mapson's business experience is 16 years as President of Videoman Productions, Inc. and includes being involved for many years with D. H. Mapson and Associates, a business development firm.

For the film "Bob's Night Out", Mapson (As Duck Scroggins) a mentally challenged hillbilly, he actually ate part of a taxidermied duck for the gag scene.Formerly Vice President of Video Production of 'American Mutoscope and Biograph [us]', the oldest movie company in America established in 1895.Actually set his underwear on fire for the 'American Mutoscope & Biograph' "Mutoscope" short film "Fire", in which he is accidentally set on fire at his girlfriend's by candles during a romantic rendezvous.