Originally Posted by ThePowerCosmic
I imagine that Beast was a few years older than the rest, but still a teammate.
I think that Erik will help Charles build the second Cerebro, since it's been mentioned in the movie before.
They explain Beats's decreased ageing in that he injected something from Mystique's blood into them.
And I'm with you in that I'd like to think Eric and Charles will build the second version in the mansion together.