"My sister, Shego. You know, I wasn't so sure about this when I was first told I'd be visiting," more like 'warned', really, "but I think a place like this could be just the think she needs to nudge her back onto the right path. And it must be working if she's such good friends with this brother of yours. I don't think I ever remember her ever - well - so much as talking to someone she didn't have to."

Apparently extremely alien situations made him talkative and overshare-y.