Who else could have been the alien?

I would have been interested to see one of the earlier choices, Gemma Arterton play it. She has a very sphinx-like quality that would have gone maybe better, that without Johansson's round features could have improved. Given us a more sinister beauty from the alien. Bewitching

Hmmm if she could keep her lips in a normal shape Keira Knightley comes to mind too

Maybe ,

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