On Gilligan’s Island, what was the full name of the character known as the Professor, played by Russell Johnson?

Roy Hinkley is the answer. Russell Johnson played the Professor on Gilligan’s Island, the CBS sitcom created by Sherwood Schwartz that premiered in 1964. The Professor was one of the seven stranded castaways after a short tour aboard the S.S. Minnow went wrong, and he was known for scientific knowledge, inventiveness, and practical problem-solving on the island. His full name, Roy Hinkley, is less often used than “the Professor,” but it is the character name behind one of classic TV’s most familiar castaway roles.