If you've played around with Akinator, have you ever stumped him?

It's so difficult to do so. I finally was able to do it by trying to get him to identify the MegaCon mascot (which is literally the only thing I can think of that'd be obscure to him). I wonder if I ask about a random SMBC character. There's just so many in there, that if I ask about an obscure one, maybe he won't get it.