History Characters / UruseiYatsuraMain

* PervertAlliance: Ataru often leads the other boys of the class when they see an opportunity to be perverted.

* RedOniBlueOni: The brash and impulsive Red to Mendou's calm and polite Blue.

* ShipperOnDeck: Lum supports Ran pursuing her ex-boyfriend Rei because Ran is her childhood friend and Lum wants her to be happy despite Ran's antagonism towards her ''because of'' Rei.

* NobleMaleRoguishMale: He acts as the noble (rich, suave and gentlemanly) to Ataru's roguish (middle-class, rude and perverted). However, deep down Mendou is just as roguish as Ataru.

* RedOniBlueOni: The calm and polite Blue to Ataru's brash and impulsive Red.

* SeriousBusiness: Octopi. The entire Mendo family is ''obsessed'' with them, to the point they maintain a large pool just for them and a gigantic reproduction of the antarctic environment for sake of a single Antarctic Octopus, but Mendo is the one who shows this trait the most. It's justified in that their FunnelMouthedCephalopod appearance makes them look a lot like their family crest, which is based on the comic character Hyottoko.

* InnocentBlueEyes: In the 1981, shehad blue eyes that represent her sweet nature.

* {{Irony}}: While she adores spicy food, she can't stand [[DoesNotLikeSpam garlic]], a very basic seasoning.

* BetaCouple: With Inaba. They're the only couple in the series that's actually functional and don't have any abusive moments between them. They're also officially dating by the end, while Ataru and Lum don't seem even close to settling down any time soon.

* FirstGirlWins: {{Subverted|Trope}}. Shinobu is the first girl introduced in the series as well as Ataru's childhood friend and first girlfriend. She ''was'' supposed to end up together with Ataru, as shown in an early chapter where Ataru's future son was revealed to be hers. However, [[BreakoutCharacter Lum's massive popularity]] resulted in her supplanting Shinobu as the main heroine and Ataru's love interest. Shinobu ultimately ended up with a new boyfriend.

* HasAType: As stated in side materials, Shinobu feels attracted to perverted idiots. She liked Ataru since they were children, but is ready to ditch him as soon as she meets Mendou who is basically a richer and more handsome version of him. However, near the end of the series, Shinobu falling in love with the sweet and innocent Inaba ultimately [[SubvertedTrope subverts the trope]].

** Played straight with Inaba. Near the end of the series, Shinobu starts dating Inaba because he's the only guy in the series who is always sweet and polite.

* YamatoNadeshiko: She considers herself a responsible and ladylike Japanese girl. She's not completely this because of that temper.

* FemaleMisogynist: Gender-inverted. Mendou is a male misandrist, hating other men as his competition and putting women ahead of men at every opportunity.

* BelligerentSexualTension: With Lum. He's a jerkish LovableSexManiac and she's a short-tempered ClingyJealousGirl. He does find Lum attractive, but her violent jealous behavior and refusal to let him have a harem cause the core conflict that keeps him from reciprocating her affections.

* DumbassNoMore: In the early chapters, he's very much an IdiotHero who hardly ever does anything smart. In later chapters, he's portrayed as a perverted but cunning trickster who regularly outsmarts people, and only has IdiotBall moments when he's lusting after girls (very often, but still).

* TheFriendNobodyLikes: Apart from Lum, none of the other characters like him that much. The guys are jealous of his relationship with Lum and the girls can't stand his perverted behavior -- he does have two buddies called Kosuke Shirai and Hokuto in the manga, [[ThoseTwoGuys but they don't really get any screen-focus]]. And Lum's cousin Ten hates him because he is an "idiot". Even his ''parents'' don't like him very much, openly lamenting that they would have rather had a daughter.

* NoGuyWantsToBeChased: He's always chasing women who want nothing to do with him, yet tries to get the hell away from the only girl who is always chasing ''him'' because she's a bit too possessive for his taste.

* UnluckyEverydude: He falls behind in the "Everydude" part, though, seeing as how he's a {{Determinator}} and LovableSexManiac of such intense perversion he's outright stated to be the most concentrated source of lust in the known universe. He comes off as average because everyone else he hangs out with is even more bizarre...

* AdaptationalNiceGirl: The 2022 anime omits Lum's mean-spirited moments from the early stories to avoid the EarlyInstallmentWeirdness found in the original versions. She doesn't blackmail Ataru into letting her live with him, her animosity towards Shinobu is completely gone, she doesn't lie about being pregnant with Ataru's child just to annoy Shinobu and Rei, and her love for Ataru looks genuine from the start.

* BettyAndVeronica: In the early parts of the series, Lum plays the Veronica to Shinobu's Betty. Completely opposite to Ataru's childhood friend Shinobu, Lum is a skimpily dressed, hot alien girl who falls for Ataru and tries to forcefully make him hers only. Once it was decided that Lum was going to be the main heroine instead of Shinobu, the LoveTriangle was dropped.

* BreakoutCharacter: Lum was only planned to be in the first chapter, but fans (and Takahashi's editor) loved her so she returned in the third chapter and was placed in the role of the female lead's love rival. Since Lum was still massively popular compared to Shinobu, she quickly replaced her as the {{Deuteragonist}}, love interest, and poster girl for the series. In many foreign adaptations, she even becomes the title character and is often believed to be the main character due to this. To this day, she remains one of the most recognizable anime and manga characters ever created.

** In the earliest chapters/episodes, Lum is ''very'' sexually provocative towards Ataru, at one point even going so far as to slide into a futon, take off her bra, and wave it whilst begging Ataru to join her. In later chapters, she's far more chaste; in the story where Lum's dad comes to stay at the Moroboshi household after a fight with his wife, in the anime adaptation she gets very embarrassed and protests that she and Ataru don't sleep in the same bed when he assures them that he won't get in the way of their "fun", and in one chapter she invites Ataru to sleep with her, only for her to clarify that she meant that ''literally'' [[InnocentInnuendo rather than as an innuendo]].

* Innocent Blue Eyes: In 1981 anime, she had ble eyes that represents her sweet personality

* Innocent Blue Eyes: In the 1981 anime, she blue eyes that represent her sweet personality

* InTheBlood: Her mother is also an oni with ShockAndAwe powers. Additionally, what little we see of the relationship between Lum's mother and father suggests it has some elements in common with Lum's relationship with Ataru, particularly in the 1981 anime adaptation of the story when Lum's mother kicks her father out of their house for being a JerkAss.

* JerkWithAHeartOfGold: Lum is clingy, possessive, controlling, and can get violent when she's angry (one of the anime opening songs directly compares her to a landmine). But she's also sweet and loving towards the people she cares about. In later chapters she TookALevelInKindness and, despite her many flaws, she's a friendly and nice person (nicer than Ataru, at least, who still remains a JerkWithAHeartOfGold).
* KaleidoscopeHair: In the manga's colored pages, Lum was given iridescent hair, which got changed in the 1981 anime to its iconic green because iridescence is next to impossible to animate. The 2022 anime, on the other hand, does have Lum's hair shift between colors, but only when her electricity powers are on or when the lighting of the scene changes.

* LightFeminineAndDarkFeminine: The sexually aggressive Dark Feminine to Shinobu's demure Light Feminine.

* SpotlightStealingSquad: Even though the manga was originally supposed to have Ataru and Shinobu as main characters, Lum gradually came to overshadow them both to the point she became the SeriesMascot and it's a common misunderstanding to think she's the protagonist because of it. {{Lampshaded}} when Ataru tries to give up one of his positions (class representative) and everyone assumes he's giving up his spot as [[BreakingTheFourthWall the main character]], she says it can't be that because ''she'' is the main character.

* StalkingIsLove: {{Downplayed|Trope}}. Ataru initially is very annoyed to have Lum invading his personal life and following him whenever he goes. However, if Lum ''isn't'' following him, Ataru starts to miss her to the point of wanting to cry because she became a big part of his daily life without him realizing.

* DemotedToExtra: Thanks to Lum becoming the BreakoutCharacter and replacing her as the other half of the OfficialCouple, Shinobu loses prominence later in the series. In early stories, she's TheRival to Lum for Ataru's affections, but eventually loses interest in him and becomes just TheGenericGirl who often hangs out with Ataru and his friends.

* LightFeminineAndDarkFeminine: The demure Light Feminine to Lum's sexually aggressive Dark Feminine.

** Played straight with Inaba. Near the end of the series, Shinobu starts dating Inaba because he's probably the ''only'' true NiceGuy in the series.

** The 2022 anime has turquoise as Lum's primary hair color, though as a nod to her original iridescent hair, it shifts between various colors when she's using her electricity powers. In addition, her eye color changes to amber as opposed to the blue-green from the 1981 anime.

[[folder: In General]]

[[folder: Ataru Moroboshi]]

[[folder: Lum Invader]]

[[folder: Shinobu Miyake]]