Bare with me for my headcanon here for a second… Noctis has a scar on his on his torso from going through a partial nephrectomy when he was a child. It seems like problem after problem keeps piling on to this poor boy, and this time the problem happened to be a kidney tumor. All in all it’s not an overly big scar, just a few inches. Of course it’s been so long since then that the scar has greatly faded from how it once was, however it’s still noticeable.
Ignis has one small discolored dot on the palm of one of his hands. At first glance people mistake it for a freckle or a spec of dirt. But in reality it’s a mark from his childhood. He can’t quite recall how it happened, he was relatively young. Only that he was in a room with another kid his age, and that for some reason, as he held his hand out in front of himself, they stabbed his hand with a pencil. All these years later and he still has a mark…
Gladio already has a bunch of old scars. We see them on his face and on his torso and he proudly displays them. These are his badges of survival. But the one that most people don’t get to see is high up on his leg. He was wearing a short pair of workout shorts when he had been out jogging. When he was done he had actually been invited over to a friend’s place briefly. They had a cat, a friendly little thing, and shortly after he sat down it came a running for his lap. Though it was a sweet kitty, it was also a very skittish and easily spooked one. There was a thump of something being dropped in the other room and unfortunately for Gladio it scared the cat- it flailed around as it tried to get back on it’s feet to run, claws out and everything. He ended up with some minor scratches that didn’t break through the skin all over his legs, but unfortunately for him he did get a couple of deep ones up at his left inner thigh. And you can still see the faint marks of it still. (though he counted his lucky stars that the cat didn’t kick just a little further over)
Prompto’s got a couple from over time. He’s got a couple of lines here and there. But he’s got a noticeable mark on one of his feet from a time where he had been prepping food in the kitchen and dropped the knife by accident… Landed point down on his foot. And a more recent mark is on his right hand- he left his hand on the conveyor belt at the checkout of some store while still in Insomnia. He kept it there until he found his hand suddenly jammed under the edge at the end of it. This time he was lucky it didn’t cut him open, but it did bunch some of the skin together into a ridge.