Frank Silva was an American set dresser and actor who appeared as BOB in Twin Peaks and Twin Peaks: Fire Walk with Me. He appears posthumously as the character in the 2017 revival through the use of archive footage and special effects. Part 2 is dedicated to Silva.
Silva initially worked as a set dresser for Twin Peaks – having also done the job in David Lynch's Dune, Blue Velvet, The Cowboy and the Frenchman, and Wild at Heart – and was asked by Lynch if he was an actor. When Silva's reflection in a mirror was accidentally filmed, the character of BOB was created.