Re: SuperMan Sequel: Major Twists-Shocking Truth about Jason
Aside from the fact that Superman Returns is not a direct sequel to the previous films, but just a "vague" one (Singer has said the story ignores the whole "mylar bed" scene from Superman II), what happened in Superman II was not that Superman became human. He flashed himself with red sun radiation, leaving him in the same state Kryptonians were in while on Krypton. Kal-el is Kryptonian, he cannot become human (forget what you've learned on Smallville). The red sun radiation does the opposite of what Earth's yellow sun does, namely give him super powers. It's logical to assume that the red sun treatment would even wear off after a while, although this has yet to be explored. Even if Jason was conceived while Superman was under the red sun radiation, it does not necessarily follow that Jason would also be powerless, especially if he were to get enough of Earth's yellow sunlight. After all, Superman himself was born on Krypton under a red sun.