Originally Posted by Angamb
X1 had 3 members since the beggining, but that doesnt mean there were more members the previous years.
It isnt realistic to think that Scott, Jean and Storm have been the only x-men since the 80's.
So an interesting question is: which mutants were team members right before X1?
Beast, surely. I remember in X3 when he put the costume he say to Wolverine that still fits it. So surely Beast was part of X-Men right before X1.