-Copy the Sylvanas Windrunner hero from the human champaign.
-Paste it and chance everything necessary. Name, model, abilities, projectile art, unit sound and so on.
-Voila. You have yourself a brand new Marine hero.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.