Big Eater/Fan Works

Thin Characters
""The truckers on the other side of the restaurant are eating fruit tarts and staring open mouthed as she packs away a party platter single handed.""
 * John in With Strings Attached. Eats at least three times what a normal person eats. He can ingest and draw nutrients from just about any organic substance. As a side effect, he's immune to poison and drugs, including alcohol.
 * Socrates from Calvin and Hobbes: The Series; at one point he builds and tries to eat an actual food pyramid.
 * In The Tainted Grimoire, many are they who are shocked at how much Cid and Ensei can eat.
 * The Legend of Korra Villains Out Shopping fanfic a million miles of fun has the incredibly tall but lithe Cold Sniper Dark Action Girl P'Li ordering off the family value menu and actually being that hungry. Guess combustionbenders must have blast-furnace metabolisms.


 * This is actually a fairly common fanon interpretation of P'Li—primarily on the grounds that someone of her height would require a lot of calories to begin with, but partly on the grounds that certain symbolism concerning the ājñā chakra suggests that combustionbenders probably would have high metabolisms. Additionally, it's an example of the trope used as a humorous quirk that she can be given while still kept entirely in character.
 * In Better Off Not Knowing, mention is made of tall, gawky viewpoint character Hakini's "increasingly ravenous appetite." Considering that she's a growing girl of twelve who's already edging up on the six-foot mark, that's entirely to be expected.

Fat Characters
"Ron: Accio double-stuffed!"
 * In A Very Potter Musical, Ron Weasley always has a snack, including but not limited to: a carton of Chinese food, a bag of Funions, Twizzlers handed to him by a member of the band, and a Hershey bar the size of his torso.


 * Wheatley becomes this after GLaDOS implants his brain into a human body in the Portal 2 fic Test of Humanity. He ends up eating everything in Chell's fridge after tasting food for the first time, and, later on, GLaDOS tricks him into eating 30 cakes. By the end of the fic, he's grown noticeably fatter.
 * The sequel has Chell's roomates being unable to make anything for dinner because Wheatley already ate nearly everything. And, Wheatley then admits he made a large order for Chinese takeout...most of it being for him to eat.
 * Sheila Brainstorm and her mother from Calvin and Hobbes: The Series - the latter ate an entire turkey in a few bites.