GoldenEye 007 on the Nintendo 64 was planned to allow you to play as all previous Bond actors, with the exception of who?

The answer is George Lazenby because, despite appearing in only one James Bond film, "On Her Majesty's Secret Service" in 1969, his portrayal of the character did not gain widespread recognition or popularity, making him an exception to the game's concept of allowing players to embody all previous Bond actors.