Based on the pics, Panettiere has a somewhat broader looking face than Glau. Glau's more angular looking features (at least in that pic) seemed a closer match for Mission.
Bamber does make a decent match for Carth based on that pic.
Now, I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor, dumb bastard die for his country.---Patton
There is no room in this country for hyphenated Americanism.---Teddy Roosevelt
I never forget a face, but in your case I'll make an exception.---Groucho
And if you all get killed, I'll piss on your graves.---Shaman Urdnot
How would you like to own a little bit of my foot in your ass.---Red Foreman