Seabase
"Nahtaival, this is Arthur Curry," said Levi. "He's from Atlantis, a city that's underwater that most people won't get to see, but we might, someday. He's nice."
She turned back to Aquaman.
"Luthor had her made in an attempt to make a copy of me to... well, I'm not sure. Make me look bad? Get someone as powerful as me under his control? He wasn't clear on his plans. Anyway, it didn't work out the way he wanted, obviously, but he did make a copy of me that has, at a minimum, no life experience and some communication issues. I haven't had a good chance to really test her mental aptitudes, but at least she picked up the basics of speech pretty quickly...
"...anyway, I'm worried that he might have succeeded in making a duplicate of me that's essentially a copy of me, but without the education that I've had, and that could be really, really dangerous.
"Um. Not because of her, you know, breaking buildings and things. But because she might have the trait that I do that I haven't told people about.
"Art... what do you know about my mother?"