"Alright, here's an' oldie, but a goodie. Got a friend 'o mine that RPG's wit' us on th' weekends, he needed a character t'play in a 'Teen Heroes' campaign. He was fresh outta ideas, on account'a he'd been through a tough time. So, I gave him th' basics on this li'l gem. Super strong, nigh-invuln'rability, flight, an' some spiffy cosmic energy powers.
"The catch? She's really a 16-year-old skater girl wit' a pair 'o ancient armbands that she strikes t'gether all Linda Carter-style t'change.
"Well, he takes to it like a duck t'water, but decides t'change her species t'human. Don' know why anyone'd WANT t'play as a human, but whatever floats yer boat, y'know?"

*****

And, with many liberties taken for creative license, that was about the way it went. The two of us spent some time trying to think of a "superhero-y" name that (A) sounded good, and (B) hadn't been taken already. The word "nia" came up, as I had remembered it from somewhere to mean "purpose" in some African language. We figured it was obscure enough to sound good AND have the desired meaning, so we threw a "mighty" onto the front, and thus was born the Mighty Nia.
Funny thing is, I found out just today that Nia is also an Irish name meaning "female champion". Ain't THAT a coincidence.