Originally Posted by A&W
You know in donnels films the villains from his home world were in prisoner? They could be imprisoned with kryptonite. When they make it to earth they bring it with him.
That makes no sense. Kryptonite was created by the destruction of Krypton. There is no way that Kryptonians could build a prison of Kryptonite because it didn't exist yet. It is a byproduct of Krypton's destruction.