In the animated film Tarzoon: Shame of the Jungle, Tarzoon encounters the Everything-Devouring Multitudinous Munchers who eat everything in sight. They devour three people, a tree, several hippopotamus, an alligator, an ostrich, a giraffe, and several water buffalo all in a manner of seconds.
In The Return of Hanuman, Maruti is a Big Eater. As a baby, he drank milk from two buffaloes. It only made him look like an elementary school student when he's only three months old. He's not done there yet. He ate all the food supplies from the village where he lives in one night. He also ate bread his friend's mother was making until all of the ingredients were finished.
In Beauty and the Beast, Gaston sings about how, when he was a lad, he ate four dozen eggs every morning to help him get large, and now that he's grown, he eats five dozen eggs, so he's roughly the size of a barge. Though he's more muscular than thin. He also took a bite out of a leather belt, although he did that just to spit it out afterwards.
In Penguins of Madagascar, not only does Rico eat everything, but he can also cough up whatever he ate on cue. Skipper and Mort become this after they've been mutated.
It may not be that evident, but Princess Anna in Frozen is implied to be one. She sings about wanting to "Stuff some chocolate in [her] face", finishing Hans' sentence with "sandwiches" in their song, and when she blabbers about the wedding ceremony with him, one of the the first details she goes through is that "there'll be soup, roast, and ice cream".
Kung Fu Panda: Similar to Po below, Shifu has been shown putting away large amounts of food in a very short amount of time, most notably during the dumpling fight - 10 or so, each the size of his mouth, within 2 seconds.
In Yellow Submarine, a denizen of the Sea of Monsters vaccuums up other monsters... it then vaccuums up the submarine...then vaccuums up the background art...then, spotting its own twitching tail, vaccuums itself into nonexistence, leaving the sub slowly spinning in a featureless white void.
Chien Po in Mulan to the point where he is shown eating a bowl of rice randomly in the middle of a brawl, is the only named character to engage in the "order" pun that annoys Chi Fu, and declares he doesn't care about what his potential girlfriends look like or wear—as long as they provide him with food. In the sequel, he ends up withanotherBig Eater, Su.