At the end of Deadpool, there wasn’t an end-credits tag where Cable showed up, but Deadpool himself did announce that the time-traveling mutant would be appearing in the sequel. So now that Deadpool 2 is officially on its way, the writers have to deliver on that promise. Speaking to Collider, Deadpool writers Paul…
Source: Gizmodo – Cable’s Backstory Is Too Ridiculous Even for Deadpool 2