I'm going to comment on every one of these because you were awesome enough to write something for each character and they're kind of amazing.

Little Kate is a fantastically little no-nonsense opportunist about her New Kids lunchbox. I love that she took both lunchboxes. I love that she thinks Gaius looks "all greasy and stupid," I think Gaius's voice here is pretty impressive, and I love this exchange:

"I don't take advice from strangers."

"Only lunchboxes, I see."

Leaving all of my more general comments here, I'll also say that I love the impressions Six and Gaius leave on each character. This was a delight to read.