fatgum lost tons of weight in the heat of battle and turned into hotgum
hotgum is hot, but he is not the True fatgum. the true fatgum is fat. see:
free time shows the true self, and he’s fat in his free time.
you only see hotgum when he’s basically burned up all his fat with his fat quirk. that means he can’t use his fat quirk anymore. he’s running on empty, and that doesn’t feel good
a fatgum who isn’t fat is like a gecko that dropped its tail. like, yeah, he’s gonna be fine, but something bad happened and now he’s not in the best condition. a hotgum is a fatgum who needs to recuperate before he can go back to doing hero work. hotgum probably needs to go to the hospital
so it’s very weird to see fanart where hotgum is in a casual situation bonding with his interns or whatever, because in a casual situation, fatgum would be fat. i don’t think there’s a casual situation where hotgum would exist.