Bob is a character from Operation Crash-Dive. He was the co-pilot of Fireflash 4, and along with his pilot, was rescued by Gordon Tracy in Thunderbird 4 after the plane crashed and sank to the seabed. Gordon used Thunderbird 4's laser cutter to disconnect the airliner's heavy engines, enabling the Fireflash to float to the surface.
Bob was voiced by Ray Barrett.
- Bob must have had very poor eyesight as he needed binoculars to read the message Gordon was sending on the Light-Type from in-front of Fireflash's windscreen.