Ah ok, now that I've seen the site I get it. The name of the movie is just a coincidence. It's about aliens invading Earth. Phew! That puts my mind at ease.
But here's my cast idea for Sins: The Movie.
Multi is the commander of the TEC and is the protagonist and will blow lots of things up.
Schod is the malevolent leader of the Vasari and he will eat human babies.
TGE is the aloof, but evil leader of the Advent and he will be a New York Yankees fan (can you think of anything more evil than that?).
Lord Kosc will be Multi's side-kick (read: Multi's bitch)
Eet will where a red shirt and die within like 10 minuetes.
Yarlen will be a kick ass mercenary on a quest to revenge eet.
And at the end when the improbable allies Schod and TGE are about the finish off the heroic Multi...Blair Fraiser will come in with one Kol and destroy the entire remaining TGE and Schod forces (Multi did a number on them but it just wasn't enough).
I'll be the director and when the movie tops the box offices, I'll take all the money and buy an island.