Monica Rambeau - Tracie Thoms - I'm surprised nobody has pointed this out yet... Anyone who's seen Grindhouse, or hell, even Rent, knows that Thoms has the domineering leadership role down pat, and I think she'd bring a hell of a lot to the role.
Tabby Smith - Mandy Moore - If you've seen Saved! you know that she's not one of the pop star girls who can't take a joke. She loved making fun of her character type, and plus, she's one of the teenybop stars of the late 90's early 2000's... Imagine her chewing gum in a tight pink dress, big boots, and some bubble-gum, and blowing **** up.
Aaron Stack - Alan Tudyk - Wash from Firefly. He just plays the role cold as hell, suddenly launching into his rants of hatred against the fleshy ones. He's all sorts of comedy, and played a much more straightlaced character in season 2 of Arrested Development, and I think he'd be the perfect guy to find the balance between funny and robotic coldness
Elsa Bloodstone - Kate Beckinsale - Lena Headey would be a good choice if she was a few years younger... We need somebody who's got the right age, the right look, and somebody who could kick ***? The star of Underworld and Van Helsing knows her horror movies, and with an amazing script, I know she'd shine past her pretty exterior.
The Captain - Johnny Knoxville - This one gave me the hardest time. He's supposed to be pretty pathetic... A drunken nuisance who shouldn't ever have gotten superpowers... So I think drunken nuisance, and I think obnoxious, and I think Johnny Knoxville.
Gen. Dirk Anger - Bruce Willis - Bruce Campbell would be great, but I think it would cheapen the character a bit to let him get TOO over the top... Let me clarify. Imagine a stern eyed Willis taking everything he's saying seriously... But still saying all the crazy ****ing Rediculous things Dirk Anger would say. Then as he goes crazy, I think Willis could portray a ****ing crazy lunatic running the Aeromarine into a floating island more effectively than Campbell...
The Voice of Devil Dinosaur - Jeremy Irons - The voice of Scar from the Lion King coming from inside a giant red Dinosaur in a fancy suit. 'Nuff Said.
I'll load one of them picture lines in a moment...