If that was Max’s baby it’d have AC: -1, THACO of 3 and +9 to all saves (2nd Ed rules). Although I think the parents are taking a bit of a liberty with that baby claiming it’s got a charisma of 18, when it can’t even speak yet.
What if it’s first words are “Pitiful mortals! I shall tear out your souls!”
Someone’s going to look a bit silly…