History YMMV / MoonGirlAndDevilDinosaur2023

** The scene in Episode 3 in which Lunella fights Gravitas, set to a censored version of "Sweatpants" by Music/ChildishGambino is featured in a large amount of promotion for the show, serving as the most iconic scene due to showing off the show's combination of SugarWiki/AwesomeArt, SugarWiki/AwesomeMusic, and AwesomenessByAnalysis.

** A portion of the fans guessed that [[spoiler:Mimi knows that Lunella is the new Moon Girl]].

* InformedWrongness: The White Girl who critiques Lunella's hair is presented as a jerk for it, problem is that all her criticisms would be a sign of poor Hair Care for someone with naturally straight hair like herself, and is likely just as in the dark about the needs of naturally curly hair as Lunella was.

* UnfortunateImplications:The show unfortunately does have some rather racist undertones, having virtually every white/pale skinned character in-series portrayed as an unrepentant villain/jerkass, while every brown/black character who's presented a villain/jerk is portrayed sympathetically, generally learns a lesson and redeems themselves.
* UnintentionallyUnsympathetic: Morlak. The show tries to present him as someone who just wants his due credit denied to him by racist superiors, problem is the organization he worked for, The Enclave, requires all members to use codenames, already making it unlikely that anyone is getting credit for their work there, and that aside, it's pretty commonplace for a project leader or company head to take the majority credit for a project, especially when meeting with investors as his superiors were at the time, also there's nothing indicate said superior been racist other than him been white, yet Morlak responds to this by activating the machine despite knowing the dangers and killing both his superiors and the investors, and taking over the Enclave. And even then, despite having decades of time and vast resources, he's unable to recreate the Portal Device without either [[spoiler:Mimi's]] or Lunella's help, making his actual contributions seem minimal at best.

* UnitentionallyUnsympathetic: Morlak. The show tries to present him as someone who just wants his due credit denied to him by racist superiors, problem is the organization he worked for, The Enclave, requires all members to use codenames, already making it unlikely that anyone is getting credit for their work there, and that aside, it's pretty commonplace for a project leader or company head to take the majority credit for a project, especially when meeting with investors as his superiors were at the time, also there's nothing indicate said superior been racist other than him been white, yet Morlak responds to this by activating the machine despite knowing the dangers and killing both his superiors and the investors, and taking over the Enclave. And even then, despite having decades of time and vast resources, he's unable to recreate the Portal Device without either [[spoiler:Mimi's]] or Lunella's help, making his actual contributions seem minimal at best.

* EpilepticTrees: Given that ''Series/MsMarvel2022'' has [[AdaptationSpeciesChange changed]] Kamala Khan from an Inhuman to a [[Franchise/XMen mutant]], many believed that the same thing would happen to Lunella as well. Ultimately, the final product has her as merely a genius human scientist akin to ComicBook/IronMan.

** "[[Recap/MoonGirlAndDevilDinosaur2023S1E8TeachersPet Teacher's Pet]]:" The RatKing is a brilliant and devious rat with a monstrous hunger for good pizza. After his months of planning a pizza heist is foiled by the unexpected intervention of Moon Girl and Devil Dinosaur, the Rat King vows revenge upon them; he immediately adjusts his plans to engineer a method to face them, tricking their class's pet hamster into entering the sewers before imprisoning the poor hamster as bait for the duo. Using a trap with a delay to catch Lunella off-guard, he abducts her and orders his minions to drop her into the sewers below, then immediately altering his scheme to focus on stealing her cassette player so she cannot use it to deter his rat army, even [[VillainousValor leaping in to personally grab the player before Devil can]]. Despite his defeat, the Rat King manages to pull himself back up through sheer tenacity.

* CantUnHearIt: Due to this cartoon, most people hear Creator/DiamondWhite as Moon Girl whenever they read ''ComicBook/MoonGirlAndDevilDinosaur''.

** At Casey's bat mitzvah, the Rabbi mentions the story of King David and Jonathan, which has plenty of HoYay of its own and has been interpreted through a gay lens many times.

** In "Skip this Ad... olescene," Lunella skips too far forward in time and finds herself [[spoiler: holding hands with Eduardo in what looks like a dance]]. Definitely not something one would expect from their prior relationship of mockery and disrespect.

* SignatureScene: The scene in Episode 3 in which Lunella fights Gravitas, set to a censored version of "Sweatpants" by Music/ChildishGambino is featured in a large amount of promotion for the show, serving as the most iconic scene due to showing off the show's combination of SugarWiki/AwesomeArt, SugarWiki/AwesomeMusic, and AwesomenessByAnalysis.

* EvilIsCool: The Beyonder has a slick design, is smoothly played by Creator/LaurenceFishburne and has enough LaughablyEvil energy and flair (Even including a VillainSong!) to make every appearance from him a delight-- especially considering his status as an AntiVillain.

** A clip of Lunella staring at Casey with [[WingdingEyes heart eyes]]. In context, she's just admiring Casey's straight, flowing hair after a classmate makes fun of her curly hair.

* MisaimedFandom: The scene in "Hair Today, Gone Tomorrow" where Lunella makes heart eyes at Casey. To fans with ShippingGoggles, this was a LesYay moment, but it was actually about Lunella being ashamed of her natural hair and wanting straight hair like Casey's.

** Lunella and Casey share a bed during a sleepover at the end of Episode 5.

** Then there’s [[https://marvel.fandom.com/wiki/Garko_(Earth-616) Garko the Man-Frog]], who not only shares Rat King’s trait of being in a single issue, but had his opponent in that issue be ''[[ComicBook/HowardTheDuck HOWARD THE DUCK.]]''

* HarsherInHindsight: LOS applies for the school's therapist position, and is accepted because they'll work for free. The show's release coincided with the rise of AI programs in various industries, with many people including cartoon artists decrying as a transparent attempt to get out of paying real employees.

* TearJerker:
** LOS-307 is a self-aware supercomputer who just wants friends, but spends their days sitting alone in storage or being made to compete against people. Most of their chess game with Lunella is spent trying to chat with the girl, but she’s too competitive to pay attention to LOS’s attempts to befriend her.
** Lunella revealing to her family that she lost her hair and explaining why.
** Eduardo being genuinely hurt after realizing that Lunella did their entire science fair project herself and ignored all his ideas.
** Lunella after Beyonder [[spoiler:pretends to destroy humanity]]. She says nothing except for a tiny "Why?" at what she thinks is the [[spoiler:pointless genocide of her entire species]]. Thankfully, it's all fake, but it was still a horrible experience.