No one! That's why it's pointless to protest not being a spy, unless you're trying to trick me into believing you. WHich would make you a spy. But then, a spy would know that I know their plans, which would lead them to act like they are not a spy, by not protesting their innocence. So the opposite is true, if the innocent person just doesn;t think like a spy. But you admitted to being a ninja, so that means you are a spy, even if you're not for them. So, you couldn;t make a mistake like that, which means you must be a spy for them!

Ah-HA! I'm on to you!