What about the President or the person that the Brotherhood is going to assassinate? Whether its a main, supporting or small role. Of course there's going to be a new character. Every X-Men movie after X1 introduced a new character. And I get your point that this movie shouldn't be overcrowded. Thats why I don't want Jean, Scott, Kurt to return. but 1 new mutant character wouldn't hurt the film at all. Future= Bishop Past= Polaris Those would be my choices but if they are gonna bring a new character especially a member of the X-Men, I hope that new character will have a significant role in the plot of the movie.