Okay. Totally new. They can work with that, they think, staring at the proffered hand for beat before they actually take it.

Standing's easier with support, though they end up leaning pretty heavily on Chara's arm.

"I'm Frisk..." They trail off, struggling to think of something to add. It just feels like something they should do after Chara gave them such a long title. Nothing comes to mind in time. "...I tell people 'bout the Castle when they get here, usually," they say lamely.

Deep breath. "It's a castle in the sky, an' a hub of worlds. There's lots of people from different worlds, timelines, even some of the same people. Monsters too, 'f course. Try not to fight...anybody." Simple, obvious facts, but they only remember they'd said similar things in the past after the words are through their teeth.