Oh, what might have been. Such is always the case with Hollywood, where scenes are left on the cutting room floor, actors are replaced by other actors, and entire characters get cut at the last minute.
The latter happened in the case of Deadpool, director Tim Miller revealed in an interview with Empire. As it turns out, it was originally supposed to be the bionic Garrison Kane, and not Negasonic Teenage Warhead, who teams up with Deadpool.
In the original script the action in the third act was great, but it was just Deadpool and a lot of guns. One of my notes early on was that I wanted to see more superhero stuff. We had Garrison Kane in there for a while, but in the final round of budget cuts we had to take him out, because he was a pretty expensive dude. He’s got these bionic arms that change shape; he would have been a visual effect for a large part of the movie. And as it turned out, a visual effect too far.
After Kane was cut, Miller went back to the drawing board where he settled on Negasonic Teenage Warhead, because, well, how could he not with a "freaky, funny name" like that? For a while, Cannonball was also considered to be the straight man to Colossus, but in the end, NTW and the thought of putting a deadpan, goth teenager in the mix, won out.
Deadpool is in theaters on February 12, 2016.