Chouji: Tattoos
Chouji has tattoos. I'm sure you noticed too, but i couldn't resist! I don't own Naruto, etc,etc. I know. I'm sad too. (yeah, this disclimer will repeat. Don't cry now)
When Chouji was just a child, his parents gave him tattoos. If given a choice, he probably would've said he didn't want them, that his abnormally large gut would show he's an Akamichi anyway. Now, he's glad he has them. Sure, he's recognizable, he's easily twice the width of any normal person, but that doesn't show enough. He doesn't need the tattoos to make him unique; he needs them because they're his label. They're like a sign, red as blood, covering his face, and screaming 'Danger' for the entire world to see.
He'd carried the box of pills since he graduated the academy, and even though he doesn't want them, they're as needed as his tattoos. They're what his tattoos represent. There's a reason that the swirls on his cheeks aren't green, or yellow. They're red, like the pill that will one day end his life, but is just as necessary as the tattoos. They're what make him a ninja.
The day Chouji goes after Sasuke, people will understand. They'll finally realize that the tattoos on his face were something different. When Chouji made his decision and swallowed that red pill, everything went downhill. His recognizable stomach shrunk. His dog tags were ripped from his neck. When they found Akamichi Chouji the only thing left of him that was recognizable were the tattoos.