^ Dealing with aliens, not Metahumans.
As a rule, yes, but surely in the course of investigating possible aliens, they may have stumbled across some people that turned out to be metahumans instead.
Also, in the comics, Metahuman is a catch-all term for anyone with superpowers, regardless of how they acquired said powers, so a large portion of DC's characters can be classified as Metahumans.
Yes,
with superpowers. As in, having abilities within their own bodies. Reactron was a guy in a suit. Take away the suit -- or take away its power source, which is exactly how Supergirl beat him -- and he's just a guy.
He didn't have the powers,
the suit had the powers. He was no more a metahuman than Ray Palmer is.
It does also pertain to individuals who, in the Marvel Universe, would be considered Mutants.
Which, again, rules out Reactron.
By the way, there was a time when the term "mutant" was freely used in the DC Universe. In
The New Teen Titans, when Jericho debuted, his mother introduced him to Dick Grayson as a mutant, and Dick said, "Mutant, huh? I've heard a lot of you guys are okay," as sort of a friendly nod from writer Marv Wolfman toward his former employers.
^ Hmm. Good point. Maybe, when the term Metahuman cropped up after Barry showed up, the DEO reclassified its database.
You're still clinging to this disproven assumption. Lucy Lane
recognized the term. She already knew what it meant. It wasn't new to the characters. Don't mistake what the audience knows for what the characters know.
