Chara smiles. It doesn't meet their eyes.

"Greetings," they say. They consider giving the blue-haired woman an ironic bow, decide that would probably be laying it on a bit too thick, and settle for inclining their head in acknowledgement. "I don't believe we've been introduced. Although it seems your friend knows me."

They then face Mettaton. "What was your name again? Metaltron? Minitot? Something like that. I'm afraid you were only a brief presence in my timeline, so I can't really remember." Smile, smile, smile.