Seriously. Of all the things they could have done to Deadpool, they made him mouthless. I'd love to have been in the room with the writers when they came up with that idea.
Writer #1: So, for the final battle, we have Wolvie fight Deadpool.
Writer #2: Who is he again?
Writer #1: The mercenary guy from earlier in the film. Only now, he'll be a much more formidable foe, with optic blasts, giant swords that come out of his hands and Wolverine's invulnerability.
Writer #2: Okay, cool. But it needs something else... I don't know. What else is special about Deadpool? What's his thing, ya know?
Writer #1: Well, he's known as the "merc with a mouth" in the comics because he's a smartass.
Writer #2: Huh. That's fine, but just giving him one liners isn't going to be very eye-popping, now is it? He's the final boss, ya know? Think of it like a video game. He has to be superpowerful, but he's also gotta look like a monster. Hmmm. Merc with a mouth, you say, huh? Wait, I've got something... what if we turn that idea on its head? What if, in a nod to the comics, we make him the merc WITHOUT a mouth?
Writer #1: I'm sorry, what?
Writer #2: What if we have Stryker surgically REMOVE his mouth entirely, so he CAN'T make cheesy one-liners?
Writer #1: Well, the dialogue we wrote for this thing hasn't been particularly strong but...
Writer #2: That's it. It's brilliant! The casual viewers will be amazed and freaked out by this guy with no mouth, and the hardcore fans will appreciate it because when they see that he's the merc WITHOUT a mouth, they'll know that it's a nod to him being the merc WITH a mouth. Plus, he already was the merc with a mouth earlier in the film, so they'll get the merc WITH a mouth and the merc WITHOUT a mouth, all in one movie! The fans will eat it up! I'm a genius.
Writer #1: Yeah... maybe we should brainstorm a little more...
Writer #2: Awww, come on. It's karaoke night at the O'Malley's.
Writer #1: Eh, f*** it, merc without a mouth it is. Let's get the hell out of here.