A few contradictions I see after reading the profile that are a bit confusing:

Gust is invulnerable, so what would be the point of even fighting him?

Gust is invulnerable, yet he can run away from situations. Which begs the question, Why'd he wanna do that, when he can't be harmed?

Gust is invulnerable, yet possess little physical strength, and he's a pacifist who would never intentionally harm anyone and still, he dresses up in boxing equipment? Huh? Generally speaking, when one boxes another, then that individual is intentionally trying to inflict harm on the other for a victory in said boxing match.

Well, this was a relatively old sheet, so there was only so much room before I'd reach the point that Gust's sheet would become walls of text. So I'll do my best to address these seeming contradictions.

1. Gust wasn't really meant to fight on his own, he's more of a Mac Guffin to be protected, hence why he's paired up with Dlaigo, who acts as his guardian.

2. Related to point 1, just because he's invulnerable doesn't mean he knows how to fend for himself without any help. Unlike other immortals, he's not exactly trained in any martial arts, and because of that, he can easily be pinned down or captured, presumably to be later used by villains in some scheme that takes advantage of his invulnerability. To put it in another way, try replacing Gust with an anime princess stereotype - you'll probably hardly notice any difference in terms of role.

3. Gust's clothes are actually a physical indication of his parent's backstories, particularly his father's. To make a long story short, Gust was very fond of his father to the point of growing attached to his father's clothes, and while his parents encouraged his freedom to do so, they also taught him intensely that violence was never the answer - a lesson they learned the hard way - in order to avert a certain horrible fate in store for Gust, if he was ever forced to take a darker path along his life. Yeah, it's a weird form of circumstances, but there have been weirder reasons for weirder clothes in other kinds of fiction.

Thanks for asking about Gust and caring about him enough to point out these things. :)

And thank you for taking the time to respond. You've explained it nicely in your follow-up.