Search:

How about Sarah Michelle Geller as Puck.
David Boreanaz could make a great Weapon X (Wildchild).
Kristen Kruek she could Snowbird.
Dean Cain as Radus.

Scott Bakula might make a good Mac(Guardian), Jessica Alba could be Nemesis.

How about Harrison Ford as Mac (Guardian). The girl that plays Mystique in the X-Men movies as Heather (Vindictor).