Hideo Kojima would have preferred if the star of the new Metal Gear game had been the cyber ninja Gray Foy, rather than "running nude" Raiden, but since he was committed not to interfere with the development of the game he decided to let his staff decide. And they picked Raiden. Over Gray Fox.
"In my personal opinion, I wanted to go for Frank Jaegar or Gray Fox. But if we had gone with that, I would have had to write the script and then be really committed to creating the game."