[quote=@Eviledd1984]
[@Vixere]

Bascially they would be shapeshifting aliens. They can shift to any organic materials. But not inorganic. The transformation itself would be like in the movie, very violent and gross. But instead of asimilating everyone they'd want to learn. Or they could have crash landed thousands of years ago and are stuck on the planet. I haven't come up with a good backstory yet.
[/quote]

Hm.  This is a very interesting take!  I'm definitely curious how you would spin it.