Actually, Jack has no death. Each puno has a holiday craved on them, right? So the citizens HAVE to match the holiday. Jack is a skellington which a skellington is a symbol of Halloween. Like Santa is for pasko and the Easter Bunny is for Easter. You getting me here?
Jack was actually burned alive. Sally was cut into pieces(dismemberment) Shock killed herself Barrel was drowned Lock was frozen Oogie boogie was skinned and left in the ground to rot Zero was electrocuted The mayor had his neck broken And the scientist was poisoned