Just a couple of years ago, who would have thought that a studio would bet on an R-rated Deadpool movie? And who would have thought that the bet would pay off, big time?

We guess that not even the most hardcore Deadpool fans expected the big returns at the box office, nor the praise from the critics. But it happened "“ so, what’s next? In addition to the R-rated superhero flick trend that people say Deadpool started, the movie will get a sequel, most likely in 2018. And another fan-favorite mutant will make his debut in the sequel: Cable, the no-nonsense mutant with whom the Merc with a Mouth makes such a lovely pair.

But what other characters should there be in the second Deadpool? Well, we have some pretty interesting ideas, for both villains and allies. So check this list out!