I was thinking about this scene and it makes me wonder about Atlantis' history. I'm not too versed on Atlantis history in the DC universe but this gives me the impression that (prior to it's sinking) Atlantis was more of a more of a melting pot of cutting edge magic and technology from all over the world; is that/has that typically been the case?
regardless, I like that Brown didn't make Manta an ATLANTIAN Atlantian but still found a way to deepen the connection between David and Atlantis. this is shaping up to be an interesting avenue to provide that added dimension of history and legacy to the Hyde family. It makes me curious how this "Weapon Master" tribe could play into not just Manta but Jackson's character as well. the ancient Manta ships were a nice touch.