His office? I'm assuming that was some sort of undercover gig, then? Unless future me is thick enough to get stuck on Earth working for UNIT again.
A bit, yeah. It's... well, there isn't really a usually, given that it's never been done before, and it was less that she was convenient and more that she happened to touch the jar with the hand in it at the right time. This was completely accidental.
He and I have agreed for the moment to go by Ten and Twelve if we need to be addressed specifically, Ten being me and Twelve being him. It's what we'd be numbered if you were to go from the first version of us and count upward. I prefer Eyebrows for him, really, but he wanted to call me something even worse, so we came to a compromise.
There's another one here as well. Going by that naming scheme, he'd be Eight.