Of these characters, only Sunspot has previously appeared in an X-Men movie, played by Adam Canto in X-Men: Days of Future Past.
According to Comicbook.com, 20th Century Fox is currently searching for actors to play Sunspot, Feral and Shatterstar in Deadpool 2.
Instead, they will appear in a “post-credits tag scene” that will tease the X-Force movie further.
Much like how Deadpool’s Colossus barely resembles the Colossus in the main X-Men movies, it stands to reason that Deadpool 2 will take creative liberties with their version of Sunspot.