A performer with an aerial circus and a movie sound technician, Dean Spencer appeared as such in Stunt Pilot (1939) and was also cast in a couple of Jack Randall Westerns. Despite the brevity of his roles, the neophyte performer showed enough promise for independent producer B.F. Zeidman to cast him in a proposed series of "Roving Buckaroos" oaters opposite hillbilly singer Larry Mason (aka Art Davis) and rube performer Sonny Lamont. Spencer was awarded a marquee-ready moniker, Monte Rawlins, but only one Western was actually produced: The Adventures of the Masked Phantom (1939). Part standard music oater, part rural comedy, the oddball picture may have become a victim of the collapse of Grand National, a struggling Poverty Row producer who, that year, also released a series of "Singing Cowgirl" oaters starring Dorothy Page. Spencer/Rawlins later enlisted in the Marine Corps during WWII, and, still later, became a sound technician for Monogram and Walt Disney.