"The only people who know who is in The Door-Way are me and those they are seen by. I won't tell anyone, Laddie."
"I told you, I am the Master of The Door-Way!" He replied cheerfully.
The Master held up a hand and started ticking off fingers. "People being rude, breaking the no-excessive-violence rule, sharks, the weird moss expanding on Door 1799643-c, kittens, puppies, any baby animals, any baby sentients, any baby gods, the letter 42, (long screeching noise), laser sharks, persnickety Nameless Ends, the Axe of Sundering, The Axe of Rendering, CAD architects, insane Archons, quantum goats, that one camel named Dave, and just generally making sure The Door-Way is traversable by sentients without fear of immediate death." he let down a hand that for a moment had had far too many fingers.
"Most of those are just people that were banned, though"