Originally Posted by cherokeesam
Since when does Bryan Singer call superheroes by their superhero names? He even made fun of it with Logan's dialogue in X1. Even if Fox are the only ones legally able to use "Scarlet Witch" and "Quicksilver," he'll never call them that. Just "Magneto's Daughter" and "Magneto's Son" in the credits, if that much.
I believe Storm and Rogue were the only X-Men who went almost exclusively by their code names. The Brotherhood all did, with the exception of interactions between Eric and Charles, highlighted by the wonderful Magneto - Pyro discussion onboard the X-Wing.