The scenario: North Korea has finally done it! They are a full blown nuclear power, and they have gone nuts attacking US interests across the world and assassinating key US political figures bringing the world to the brink of nuclear annihilation. The world has entered WWIII.
Through a bizzarre twist of fate, You have been given the ability to summon one character from fiction to end this crisis. Who do you bring into the real world?
One caveat- whoever you summon is stuck here. If you summon Thor, for example, he has all of his powers and abilites, but he cannot dimensionally travel to Asgard, because there is no Asgard in the world that we know. Though he can space travel if he desires, but who knows if anything else is out there (his knowledge is as limited as ours- unless the character has other means of divining or extra normal senses.) They have their powers and abilities except where it comes to dimensional travel. They are stuck in this dimension, permanently and cannot go back to their fictional reality.
How do they relate to our world once they are here? Can they adapt to the real world? If so, how?