Hello. my theory is about the"he is mar-man clue, when they showed us that clue they first show us it's reflection on the "mirror" my be the mirror is a clue that we should read the "he is mar-man backwards (from right to left) because on the mirror it's like that  (ram si eh) i don't know what it means but it could be numbers or it could be rearranging letters for a name or a sentence, and it could also be a different language