David Del Valle was a host, actor, and film historian who worked in television and film. He produced and hosted Sinister Image, a cable TV series which saw him interviewing filmmakers such as Russ Meyer, Curtis Harrington and Vincent Price. Del Valle also acted in the TV series The Milli Show.

Del Valle had a productive career in film in addition to his work on television. He acted in From a Whisper to a Scream, Chopping Mall, and Frightmare.

Additionally, Del Valle was a successful film historian. He wrote the books Six Reels Under and Lost Horizons Beneath the Hollywood Sign. Del Valle also recorded audio commentaries for numerous films including Count Yorga, An Angel for Satan, and The Amazing Transparent Man.