13 Unanswered Questions From 2016's Comic Book Movies
9. How Does Deadpool Know The X-Men? - Deadpool
The Question: It's made abundantly clear through Deadpool's (Ryan Reynolds) interactions with Colossus (Stefan Kapičić) and Negasonic Teenage Warhead (Brianna Hildebrand) that he's familiar with the X-Men, but how, exactly?
The Likely Answer: Though most of Deadpool's mentions of the X-Men in the movie are played for cheeky meta laughs above all else, it's almost a dead certainty that his rather conspicuous crime-fighting methods caught the attention of the mutant superheroes rather quickly.
Though it remains up in the air exactly how that first meeting went, it was probably along the lines of the X-Men trying to bring him under control, and him sneaking away by any means necessary (even severing a limb if need be).