[Goddammit Wen Ning, can't believe he's gonna have to put his ex-zombie on watch to make sure he doesn't do anything STUPID... Like get himself flung from the train tracks like a penny Wen Ning.]

From our world, it's only us three so far. In general? I'd say... Mm, twenty-five? Thirty, maybe? I haven't met every new arrival yet, so I can't say for sure.