While breaking down and explaining the Deadpool Movie trailer and San Diego Comic-Con footage, director Tim Miller spoke about one of the new characters introduced in the movie: an apprentice to X-Men hero Colossus known as Negasonic Teenage Warhead.
“I went through the list of Marvel characters and picked a few others I thought could be visually spectacular and fun. And at the end of that list was Negasonic, which I just thought was a freaky, funny name. And I sent this list over to the writers, Rhett (Reese) and Paul (Wernick), and they were like, ‘Oh my fucking god, we have to use her!’ So that’s how she ended up in the movie. Her name was cool, and we kind of wanted a straight-man to play against Colossus. We thought about Cannonball, but he would’ve been a stupid hick character, whereas the guys wrote Negasonic as this deadpan goth teen, which was a great angle. She turned out really well. There aren’t really many definitive Deadpool villains, apart from Cable. If we don’t put Cable in Deadpool 2 I think we’ll be run out of town on a rail.”