问题 like these are why I come here....they make sure I remember what I've seen long 以前 由 evoking old memories.
你 know, I think that's an underused trope. The closest thing I can think of is a very old demon who took the form of a young boy & tricked everyone into thinking that's what he was.
Hellmaster Fibrizio from Slayers. Behold the Lord of Destruction & tremble at his adorableness.