I'm not sure, but he seems creepy. Have you noticed that he can talk and sing when he is alone? Or maybe he has…
i thought the same as you at first, but in the last few episodes they seem to be implying there's more to him than just that. i really like his character so i hope he's not twisted. btw i think that user was only creeped by the stalkerish photos, the song he sang, how he drugged koo's drink, etc .