Looks like the staff are aware that Ignis is kind of crazy. The early Brotherhood ep4 idea that was described during the talkshow yesterday is really something.
>Prompto and Noctis go to the arcade to blow off some steam
>Ignis follows Noctis to complain about him playing vidya during the testing season
>some thug tries to pick a fight with Noct
>Ignis and Noctis aren't particularly bothered, Prompto gets scared
>the thug flips out and punches Ignis, knocking off his glasses
>Noctis goes into cold, blank-faced anger
>Ignis sees the change in him, totally flips out and nearly murders the thug, traumatizing Prompto