Iron Man has confirmed Superman in Marvel's Universe! 1 / 6
When describing how metaphysics is his weakness... 2 / 6
Tony claims it's 'his Kryptonite' to prove the point. 3 / 6
That's a direct reference to the Superman we all know... 4 / 6
So if Superman exists in Marvel's Universe... 5 / 6
Is Superman a real person, or a comic book hero? 6 / 6