This is E-2 and he's an alien robot who really doesn't understand fleshies. He's small and very vulnerable and every little living thing that comes up to him scares him. Because he is so small and vulnerable, he has a nifty feature that allows him to take control over machinery or assemble his own out of scrap. If given enough material, he can assemble a fully functional suit of armor complete with weapons (if he can find some to attach to himself).
He is a friendly alien, but is completely puzzled by humans and their tendency to kill one another.
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KronoGarrett
Well, at least he doesn't replicate wildly when panicked.