Vina gives a measured smile to the Leader of the Free World. I don't think she's standing close enough to him to easily extend a hand.
"Mr. President, they seem to be calling me Lady Hawk. But I am new at this. I must say your Checkmate agents are very brave."
"Put tin and electricity up against superpowers? You bet they are, Lady Hawk," says Luthor. "I inherited Checkmate from Jimmy Carter -- I've upped their tech, but the guts are ALL THEIRS!"
"They haven't told me about you people, though. You've got an S symbol on ... you're not by any chance from Krypton yourself?"
Vina smiles shyly, "I guess you could say I was adopted, Mr. President."
To the others... "We'd best get this guy to a holding cell."
Wherever that would be. She has no idea so she's looking at the guys. A Tolkien nerd and not a comics one. Or, since it's real here, a superpowered one.
Chin-Su extends his hand - from where he's standing - in a simultaneous show of manners and a demonstration of his power.
Ian is gobsmacked that the actual President of the United States is approaching and addressing him and does a poor job of hiding that fact.
"D-Doesn't appear to be the real deal. I believe the Joker might have an explanation as to why one of his minions has kryptonian powers."
Quinn is mostly apolitical, and he doesn't trust politicians. He's pretty uncomfortable right now, so he just kind of hangs back and makes sure no other baddies show up. He's not at all obvious in his red costume and silver shiny shield ... but still.
"Yes, we'll interrogate the Joker," says Luthor. "For all the good it will do. There's something strangely compelling about that one's madness ... it almost starts making sense after a while."
"And if the Justice League doesn't have an appropriate holding cell for this Super-Joker, to coin a name, the Department of Extranormal Operations can certainly give it a try. We've got a few ideas percolating against the day when Superman might go rogue, or someone from the old home town with a grudge might show up ... it's happened before. And we don't always have Superman to hide behind, do we?"
"So just leave him with me, and I'll take care of it. Although, if he does break out despite all our efforts ... how do I call you? The same Justice League signal device as before?"