This may be a dumb question, but is it possible to create a character from a different reality or parallel universe? I have an idea for one but he wouldn't have any knowledge of the future of this reality due to the fact that it was well...alternate.

Second question. Would it be possible to use a character from a different Rp but with a different back story? I was thinking of using an alien hero from a different Rp I'm in but giving him a different back story while letting him keep the same abilities.

Third and final question. Would you allow an alien villain?

Thank you taking the time to look at this. :)