By one account, he was a fictional character from Marvel Comics. David read Marvel Comics and believed he had superpowers as a kid. He believed he could fly and burst into flames like the Human Torch. (PROSE: Fanboys)
In Fantastic Four Vol 3 9 (1998), Johnny Storm knows that Reed Richards got a second-hand phone booth that is bigger on the inside from his "weird 'doctor' friend". (While Johnny called it an "antique London police call box", it was drawn as a red telephone booth.)
