It's as obvious as the nose on your face, but I was thinking Tricia Heifer.

And I still don't get the idea of putting a bunch of fan-favorite characters in a Wolverine origin movie. What're you going to do, bring 'em back for X-Men 4 with old age make-up? Unless it's taking place just slightly before the X-Men movie, or there's a retcon about mutants aging slowly or... damnit, I just want to know what all the reports about a young Scott Summers showing up are about! Can't you let him rest in peace, Fox?