[quote=Jeddaven]
In regards to humans, I have a few ideas for my faction. This one is probably the most feasible, unless multiverse theory is fair game.Since the origin of life on Earth is a bit blurry, if we were to presume that life was seeded on Earth by an asteroid or extraterrestrial, what if, by some chance, that same "seed" broke up and crashed into another, earthlike planet, resulting in the evolution of a species very similar to homo sapiens?
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As much as I love to use the panspermia theory to justify humanoid aliens in my stories, it totally wouldn't result in anything like humanity at all. That being said, you can do that, just with a few modifications to the species. I'm talking Star Trek alien level modifications, so just give them pointy ears or something and it's all good.