The character who calls others "fat" is usually the villain (often named "Abusive Mother," "Mean Teacher," or "The Fat Hater"). They get their comeuppance by becoming fat themselves at the end.
The use of the "fat" trope in GoAnimate content is frequently criticized for its repetitive and sometimes mean-spirited nature.
Several established characters in this community are defined by their weight, such as Big Pauly , Fat Fishface , and Fat Jelly . Controversy and Community Impact
A comprehensive list of every character within the fandom that fits this description, from original creations to parody versions of existing cartoons.
While there isn't one single "definitive" journalistic article on the subject, the phenomenon is extensively documented through community wikis and video essays that explore its unique tropes. Key Themes and Tropes