Duke Nukem
Jon St. John has been the voice for Duke Nukem for all but one of the games. This one exception is Duke Nukem II, where Apogee Software staff member, Joe Siegler, gave him his first speaking lines.
Contributed by gamemaster1991
Duke Nukem's voice actor Jon St. John also provided the voice for Sonic Adventure's Big the Cat.
Contributed by DidYouKnowGaming