We've always known the standalone Deadpool movie would setup the character to give him a larger role in the X-Men movie universe, and with early buzz surrounding the film so positive that speculation points to a potential Deadpool sequel taking the release date currently held by Fantastic Four 2, it's all but certain that Ryan Reynolds will be playing Wade Wilson for a while.

But unlike in Marvel Comics, it's more challenging to blend the character into other live-action film projects featuring the X-Men since the Deadpool movie is rated R where the other franchise movies are not. Also, there's that little issue where Deadpool commonly breaks the fourth wall to chat with the audience or reflect on the reality that he's in a movie.

We spoke with Reynolds earlier this year while he was promoting Self/less about difficulties in fitting Deadpool on screen with other Marvel characters and while he claimed he doesn't know if it would happen we all sort of know it will.

Reynolds had previously said though that he'd love to join an X-Force movie (and a script was made by Kick-Ass 2's Jeff Wadlow for one) that would also feature Cable. Cable's shared several comic runs as a buddy cop partner of sorts to Deadpool and even when talking about a potential Deadpool movie as far back as 2009 - when Reynolds was playing a version of the character in X-Men Origins: Wolverine - he always wanted to see a Deadpool/Cable movie.

With that in mind, when visiting the set of Deadpool in May we asked writers Rhett Reese and Paul Wernick about the lengthy script development process and how much of a push there was to ensure it fits in with the other X-movies, especially given that there are three scheduled for 2016.

Paul Wernick: I’d say it’s more standalone but it lives within the X universe if that makes sense. Colossus is in our movie. What else?

Rhett Reese: Yeah, I mean it certainly will fit into the overall timeline that Simon [Kinberg]’s envisioning. And he’s the keeper of that, so if we ever violate that…there have been a couple of moments that felt like they wouldn’t fit in as well, but I’m trying to remember what those would be in retrospect. In any case, we do fit into the larger universe. The question would be: what happens next?

If I had to guess, I’d say, in success, there would probably be a Deadpool 2, a standalone Deadpool, and then he would be inserted into the ensemble movies in some fun way. That’s a guess.

Paul Wernick: We’re going to call it Deadpool: Avengers, I think.

Next Page: Deadpool Writers Want to Introduce Cable

I then asked the writers if there are X-Men characters that we haven’t seen in the films yet that want want to play with in this universe and the answer is very clear.

Paul Wernick: Cable.

Rhett Reese: Yeah, we talk about Cable because he’s so kind of inextricably linked with Deadpool over the years. Other than that, I don’t think we’ve made any decisions. We reference Professor X in the movie. It’s like he’s someone who’s… Deadpool is on his radar and he’s been trying to get him to kinda come in and do the right thing and Deadpool wants no part of it. So there may be some fun to be had there. We’re just going to have to see how it meshes with the rest of the X universe. I’m sure we’ll kinda clear the deck and say, “OK. Who might be fun to bring into this family we’re already formed if we get as far as a sequel,” which we all hope for.

While the Deadpool movie may feel and look different than other X-Men movies in its more adult, over-the-top tone and its dirtier, grungy aesthetic, it absolutely is an X-Men movie down to the little details. Director Tim Miller even teased to us how Colossus - sporting an X-Men team uniform - is introduced.

"When [Colossus] shows up you see the Blackbird in the background. It's just a nod to the larger X-Men universe that Deadpool really doesn't want to be part of. He's had his chance. I mean, there's a great line where Colossus says, 'you could be a superhero' and he's like 'yeah, I've seen my report card and I don't want to be that guy.' But I like the fact that he's deliberately chosen not to be part of that world, but it's still there.

Colossus is going to be great. He's the manifestation of the rest of that universe."

And it's not just Colossus fighting on Deadpool's side, but new character Negasonic Teenage Warheard (Brianna Hildebrand) who will be introduced as Colossus' apprentice in training. She rocks an X-uniform in the movie as well:

Hearing the writers share thoughts on Deadpool 2 coming before the character joins any X-team is unsurprising and we've heard it before. These decisions ultimately comedown to producer Simon Kinberg who's overseeing and piecing together the larger Marvel universe for Fox and he's been talking about Cable for a few years now, and was almost introduced in X-Men: Days of Future Past. So, if we don't meet Cable next year in its followup X-Men: Apocalypse, count on him showing up in Deadpool 2. Then maybe we can still get an X-Force movie down the road. After all, Fox is already working on a New Mutants movie which of course involved Cable in the comics.

More: Colossus Will Finally Be Russian in Deadpool Movie

Tim Miller directs the film from a screenplay by Paul Wernick and Rhett Reese. It is produced by Simon Kinberg, Lauren Shuler Donner, and Ryan Reynolds, starring Ryan Reynolds, Morena Baccarin, Ed Skrein, Gina Carano, T.J. Miller, Brianna Hildebrand, and Leslie Uggams.

Based upon Marvel Comics’ most unconventional anti-hero, DEADPOOL tells the origin story of former Special Forces operative turned mercenary Wade Wilson, who after being subjected to a rogue experiment that leaves him with accelerated healing powers, adopts the alter ego Deadpool. Armed with his new abilities and a dark, twisted sense of humor, Deadpool hunts down the man who nearly destroyed his life.

Deadpool opens in theaters February 12, 2016; X-Men: Apocalypse on May 27, 2016; Gambit on October 7, 2016; Wolverine 3 on March 3, 2017; Fantastic Four 2 on June 9, 2017; and some as-yet unspecified X-Men film on July 13, 2018. The New Mutants is also in development.