[Right, there will be a bit of universe-breaking, but not too much. :)]
Y/N Stark, son of Tony Stark. Like his father, he is a genius and co-owner of Stark Industries with his sister, Morgan Stark.
During a fight with a villain, he gets thrown into a different universe, the DC Universe at that. Found by the Justice League members, Y/N has to adjust to the different universe and its rules, along with the heroes and villains that come along with it.
Will Y/N cooperate in the hopes of returning home and joining this 'team' of heroes? Only time will tell.
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Rated M for Mature. Contains Mature Language, Violence, Scenes, and Lemons.