X-Force Movie: 10 Mutants That Must Be Included

5. Siryn

Although Banshee was, apparently, killed off in the events leading up to Days of Future Past, the timeline reset created by Wolverine will no doubt have rescued the character, which is a good thing, as far as his progeny's concerned.

The last time we saw the character was in 2011's X-Men: First Class, and while it's easy to doubt Sean Cassidy's staying power, it's important to remember just how cool and quirky his powers actually are. Thankfully for us the character's comic book counterpart had a daughter - called Siryn - who just so happened to join X-Force, and she's just as cool as her dad.

The cool thing about Siryn is that she has a massive history with the team, having led its original nineties incarnation and indeed, having held a romantic interest in both Warpath and Deadpool during her stint on it. Both elements make her a natural fit for the team, especially if Warpath joins the roster along with her.