The Horrid Happenings of Heidi

, colloquially shortened simply as Horrid Heidi, is an American hand puppetry/CGI animated slapstick/surreal comedy webseries that is the spiritual successor to Mia Stories, which was created by the late Kenneth Dumont. It was created by Dumont's close friend Bubba Guiana and produced in secrecy. It streamed without any prior advertising or marketing on The CC (Comedy Cartoon)'s app The CC APP on June 25, 2019, in the same fashion as Mia Stories.

Plot
The series focuses on "popular" Hispanic girl (who, despite this, speaks in a Valley Girl accent) Heidi, who gets wrapped up in hilariously surreal misadventures with her friends Ed and Mario.

Voice cast

 * Heidi (Bridgit Mendler) - The "popular" girl at her school of alleged Hispanic descent who speaks in a Valley Girl accent and gets her friends involved in some admittedly crazy antics.
 * Ed (Dante Basco) - Heidi's supposed "friend" who appears to be forced into Heidi's insane shenanigans and the typical voice of reason, though his voice is hardly heard in a running gag.
 * Mario (Dipper) - Heidi's flamboyant and stereotypically gay best friend with a penchant for make-up and pedicures. He has a better friendship with Heidi than she does with Ed because of their similar interests. He begins dating a boy named Ryan in "Heidi Gets Mario a Boyfriend".
 * Ryan (Tyler, the Creator) - Mario's African-American boyfriend who speaks in monosyllables with a basso profondo. He's introduced in "Heidi Gets Mario a Boyfriend", and regularly texts Mario in future episodes.

Differences between its spiritual predecessor
Although the series is spiritually related to Mia Stories, Horrid Heidi tends to be less crass and explicit and instead focuses on physical humor, although there are some suggestive scenes. Mia is also not mentioned or even featured at all. The show does premiere a couple of episodes every single day like Mia Stories before it, but while that show aired a span of 2-4 episodes made up of 2-4 segments almost every day since it premiered, Horrid Heidi only airs 2 entire episodes a day (not counting June 27, when no episodes aired for reasons left undefined.