[GreenHornet]

All of their names were given in a radio report on the first episode.

The only character whose full name was never given on the show was Gilligan. Producer Sherwood Schwartz once said in an interview that, should there be a need for him to have a first name in one of the episodes, it would have been "Willie."

[GeronL]

Willie? seriously?

[FredZarguna]

I thought Gilligan was his first name.