The only one I can think of is Diamond from the Diamon/Pearl/Platinum arc of Pokemon Special, though he's more chubby than fat.

Try Cousin. Its really good!

Avatar by lazygraphics on livejournal

The only reason i tend not to like manga's like this is because,the character is always miserable and self conscious.every other page is about how fat they are.kind of gets annoying plus they usually end up skinny in the end of the manga so if they are any that are actually good ones i'd like to read them to.

my lovable fatty
cousin
maybe miunohri to swan?

[m]My Loavable Fatty by [a]Lee Hee Jeong. It's a mawha but it here's the description:

Shin Dong Sun is the new girl in school and the problem seems to be that she’s fat, short, and ugly. She is picked on by her fellow classmates, her childhood friend, Jeh Suh, constantly abuses her, and her only love rejects her! Tired of her intolerable life she attempts to hang herself, but fails when the rope snaps due to her massive weight and there she finds a box full of medicine, and one bottle says that it’ll turn her into however she wants to be…

and here's the link: http://www.mangaupdates.com/series.html?id=53772

Hope this is part of what you're looking for! ^.^

<PANDA-CHAN>

Pochamani and Ore Monogatari!!.

This thread is from 3 years ago. Live and let die.

Well, if it doesn't have to be the main char, that chubby guy that-I-can't-remember-name-of from Kanojo wa Uso wo Aishisugiteru.

[img]http://www.nodiatis.com/pub/19.jpg[/img]

If still someone's interested in this search then - Pretty Haru (Manhwa) might be worth a look, too.

"It's like love is a bonus in your life. Even without it, I'm just fine. I don't feel like pointlessly searching for it. You don't have to make yourself unhappy." (Ookami Shoujo to Kuro Ouji)

"Why does it rain?" - "To create drama." (Drops (Andou Yuki))

BUMP!

I also remember a manga (shojo?) where there's a fat side-character - she's kinda mean and doesn't get that well with others - she falls or a womanizer type of guy, who is also very childish.

I remember in one scene they go to a amusement park with another couple (I think the main character) and the fat girl dresses really cheesy and old fashioned, although she spend a lot of money on the outfit. I think she also shares a kiss with the womanizer guy, and a some point he tells her she shouldn't stop loving him and kinda implies that he would think more seriously about a relationship with her.

Anyways, maybe someone remembers the name

Hands down, I Am a Hero. Protagonist is a chubby mangaka fighting for his life in an apocalyptic world. His physical imperfections fit so well cause he's not really cut-out to be your typically courageous, chick-magnet of a protagonist with a strong sense of justice.

Gosu

Main character becomes fat (chubby) after times skip, and he stays like that.

Even after dead, we raise from the ashes for the sake of manga.

Shorty and chubby are in love, so what?

[img]http://i1179.photobucket.com/albums/x392/WandereroftheDeep/higurashiimage1-1.jpg[/img]

I second Pochamani

Also Kengai Princess

Hobbies include impersonating fictional characters and sucking on ketchup packets.

Otogi no Ori