* {{Anvilicious}}: An episode in which the Spudinskis were depicted as ''literal'' couch potatoes and had become rooted to their couch due to lack of exercise.
* MemeticMutation: Due to the titular character's name, it's become fairly common to make art and memes combining ''[=JoJo's Circus=]'' with ''Manga/JoJosBizarreAdventure''.
* {{Moe}}: [=JoJo=] herself, due mostly to her absolutely adorable voice.
* RetroactiveRecognition: Madeleine Martin (the voice of [=JoJo=]) would later voice Fionna in ''WesternAnimation/AdventureTime''.
* SpecialEffectFailure: Characters can frown, but whenever they're talking, it still looks like they're smiling.
* SugarWiki/SweetDreamsFuel: It's a series about an adorable clown girl that deals with aesops, and it's very good for little kids.
* ViewerGenderConfusion: There are some who would NEVER have expected [= JoJo=] to be a girl.