[@Mas Bagus]

They can be from anywhere originally, level of technology and magic or not. 


As for the character concept, I’d just keep it in your pocket and throw it into the ring, the worst that could happen is it needs to be tuned a little to make them fit the power scale of others.

Curated sandbox is just me saying that, you can to wherever you want and do what you want to do, but I’ll throw walls at you if you’re going somewhere I don’t want you to.