List of Urusei Yatsura characters

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The Urusei Yatsura manga series features a large ensemble cast of characters created by Rumiko Takahashi. It tells the story of Japanese teenager Ataru Moroboshi, and the alien Lum, who believes she is Ataru's wife after he accidentally proposes to her. The series contains many other characters, whose unusual characteristics and eccentric personalities drive most of the stories. In addition to extraterrestrials, it includes many appearances from figures in Japanese mythology and history.

Ataru Moroboshi (諸星あたる) is the main protagonist of the series. A 17 year old lazy student at Tomobiki High School, Class 2–4, Ataru suffers from an incredible amount of bad luck, having been born on Friday the 13th, during a major earthquake, and Butsumetsu, the unluckiest day of the Buddhist calendar. Thanks to this lack of good fortune, his triumph in the game of tag that saves Earth from an Oni invasion turns into a defeat for him. His victory statement, intended to confirm his girlfriend Shinobu's promise to marry him if he won, is misinterpreted by Lum to be a marriage proposal. Much to his chagrin, she accepts. Lum's arrival strains Ataru's relationship with Shinobu. But Ataru has always been very lecherous. His main goal in life is to live in the center of a harem composed of exotic and beautiful women, including Lum and most of her alien friends. Usually, he just walks up to a woman he has never met before and asks for her name, phone number, and address. If Lum, who now views him as her husband, should witness these usually futile flirting efforts, she regularly zaps him with massive quantities of electricity, but they do nothing to slow him down. If her and Ataru get into a fight, Lum may retreat to her spaceship that she keeps above the Moroboshi home. While generally good natured, sweet, faithful, and innocent, Lum also has a very hot temper that is usually directed at Ataru when he leches on other women. She has a unique way of speaking, similar to that of young Japanese girls who are trying to be overly cute. and Katherine Burten (Those Obnoxious Aliens), Danielle Sullivan (first series) and Cat Thomas (second series) in English.

Shutaro Mendo (面堂 終太郎) is heir to the Mendo conglomerate with staggering wealth and its own private army. Upon his transfer to Tomobiki High, he and Ataru immediately become enemies. Although very handsome, charming and intelligent, on occasions Mendo succumbs to lechery and resembles Ataru, just more respectful and sophisticated in his approach. The two are much more alike than either would like to admit. Shutaro takes his role as heir to the vast Mendo fortune extremely seriously. A descendant of a samurai family, Shutaro often carries a katana with him, which at any moment could be flying at Ataru's face. He has a team of men in sunglasses who act as his personal retainers. Mendo is fond of octopuses and keeps a large number of them as loyal pets. He has a sibling rivalry with his younger sister, Ryoko. Mendo is narcissistic, overly dramatic, claustrophobic and afraid of the dark. But due to his vanity, his phobias incredibly disappear when a girl can see him. Ataru often plays on Mendo's fears by putting a large bell over him, forming a dark enclosed area where a girl can not see him. However, this has resulted in him breaking these bells out of sheer terror. The girls at school have formed a fan club for Mendo and they will do anything to protect him. Though Shinobu is the closest thing he has to a girlfriend, Mendo has feelings for Lum, tolerating Ataru's presence in order to be close to her. He is voiced by Akira Kamiya (first series) and Mamoru Miyano (second series) in Japanese,

Hot Springs Emblem (温泉マーク, ♨) is the homeroom teacher of Ataru's class at Tomobiki High. A middle aged man, his only interest is to teach, but he fails due to the constant interruptions during class. His nickname literally translates to "onsen mark", a reference to the Japanese symbol that represents hot springs which is printed all over his clothing (in the anime, the symbol is only on his tie and the back of his jacket). and by Jeremy Griffin in the English dub of the movies. In the English dub Lum the Invader Girl that aired in the UK, Rei's name was Anglicized to "Raymond".

Ten (テン) is Lum's young Oni alien cousin who starts living with her on Earth. He has a single horn on his head, can breathe fire, flies very slowly, and wears a tiger striped diaper. Ten and Ataru utterly loathe each other and often fight, with Ten spewing fire at him, destroying their surroundings, and often hitting someone else instead. They tend to display some similarities in their personalities, including girl chasing. In some ways they are similar to brothers. Ten has a crush on Sakura, but unlike Ataru he is more successful in getting close to her by using his age based cuteness and presumed innocence. He is often called "Jari Ten" (ジャリテン) by the male characters. In Japanese, adding "jari " is similar to "twerp" or "brat". Ten's parents are never around as they work a lot; Ten's mother (テンの母) is an airbike riding firefighter who hates anyone who plays with fire, thus the usually fire spewing pyromaniac Ten is on his best behavior when she does check in on him. Ten appears much earlier in the anime than in the manga. In the anime he comes to Earth in a spaceship inside a "peach" to live with Lum when his Oni powers first manifest. Ten is voiced by Kazuko Sugiyama (first series) and Aoi Yūki (second series) in Japanese, In Japanese, Tobimaro is voiced by Kazuhiko Inoue and Bin Shimada in the first series, and by Yuki Kaji in the second series.

Kotatsu Kitty (コタツネコ) is the very large spirit of a cat from the Edo period who died after his owners threw him out into the cold. After being brought to the Moroboshi house by Ten, he discovers a love of kotatsu. He then makes numerous further appearances, usually seen drinking tea or eating taiyaki at a kotatsu, often with the principal. After Kotatsu Kitty's introductory chapter, Takahashi's editor at the time liked the character so much that he asked her to have him reappear. The artist said he was fun and easy to draw. Kosuke is voiced by Kappei Yamaguchi in Japanese.

Ryunosuke's father (竜之介の父) is an overbearing and domineering man who forces his daughter, Ryunosuke Fujinami, to act like a male. The Fujinami family has run a small beach cafe for three generations, and he desires a male heir to one day take over the business from him. However, his late wife Masako (真砂子) left him only a daughter, so he gave her the masculine name Ryunosuke and raises her as a boy. Although Ryunosuke is interested in living like a girl, her father does everything he can to prevent this and denies her the chance to even try on female clothing. Having raised Ryunosuke to fight, the two constantly get into fist fights, one of which results in the family cafe being destroyed. The two move to Tomobiki and move into the high school, where Ryunosuke enrolls and her father runs the school shop in order to save up money and rebuild the cafe. Mr. Fujinami also lies to his daughter about anything to suit his needs or desires, and has done so since she was a child. Growing up, Ryunosuke had no reason to doubt him and always believed it; but now that she is older and is actually associating with people other than her father, she is learning that many things he said were lies, and knows better than to believe him. The thing Mr. Fujinami lies about most is his wife, only willing to say general things like "she was beautiful", but never giving any real information; this is a difficult thing for Ryunosuke to try to counter, since she sincerely wants to know about her mother, leading her to often fall for some trick at the hands of her father. However, it is possible that he has forgotten what she looks like altogether. Ryunosuke's father is always wearing a shirt with "I ❤ the Ocean (海が好き) printed on it, while the name of the family cafe is "We ❤ the Ocean". He is voiced by Masahiro Anzai (first series) and Shigeru Chiba (second series) in Japanese and Langley McArol in English.

Ataru's father (あたるの父) is a typical salaryman. Wearing a yukata around the house, he desires a nice and quiet homelife. In the anime his home is frequently destroyed, causing him to lament over the mortgage. He's most often portrayed reading the newspaper, something he appears to have endless copies of as he pulls another one out after someone takes his away or destroys it. Quiet, timid, and possessing very little dignity, he tries his best to hide his face behind the newspaper during bad situations, often wishing he'd be treated better since he's the sole provider for the family. Like his wife, he tends to treat their "daughter in law" better than their son as they prefer having a daughter (especially compared to their lecherous fool of a son). He is voiced by Kenichi Ogata (first series) and Toshio Furukawa (second series) in Japanese, by Marc Matney (public TV), Alan Marsh (BBC3), Jerry Winsett (movies 1 and 3–6), and Larry Robinson (movie 2) in English. Ataru's mother (あたるの母) is a typical housewife. In early chapters, she often says "I never should've had him" (産むんじゃなかった) when Ataru causes problems. Mrs. Moroboshi is frequently so embarrassed by Ataru's antics that she is afraid to show her face in public (for good reason, because Ataru is a constant source of juicy gossip for her neighbours), and especially dreads going to his school for parent teacher conferences. She sometimes dreams that a handsome young man (like Rei) will take her away from her miserable life. At numerous times she has shown to have been part of the source of Ataru's personality, acting selfishly, shifting blame, and yelling (though more often in frustration). Despite this, she also shows her caring nature, such as increasing her husband's lunch money while they were nearly out of money. She is voiced by Natsumi Sakuma (first series) and Keiko Toda (second series) in Japanese, by Dorothy Rankin (public TV), Stacey Jefferson (BBC3), Belinda Keller (movies 1 and 3–6), and Jackie Tantillo (movie 2) in English.

Lum's father (ラムの父) is a huge, pudgy oni, and tends to be loud and scary. However, he is just as afraid of his wife as Ataru is of Lum, as evidenced by the time that she threw her husband out of the house when he got mad at her for trying to put him on a diet. Lum's mother (ラムの母) is a pretty woman who can only speak in the oni language, which appears in the manga as Mahjong tiles, and in the subtitled anime as Greek lettering. In the anime, she can produce electric shocks, like Lum. Both parents can also fly, but they never show any other obvious powers. Lum's father is voiced by Ritsuo Sawa (first series) and Rikiya Koyama (second series) in Japanese, and David Krause (Those Obnoxious Aliens) and Anthony Lawson (movies) in English. Lum's mother is voiced by Reiko Yamada (first series) and Fumi Hirano (second series) in Japanese, and Kristen Foster in English.

Lum's Stormtroopers (ラム親衛隊) are four boys from the same class as Ataru who are in love with Lum and have sworn to protect her from Ataru. They are best friends but often end up fighting amongst themselves when the situation involves Lum. In the original manga, the four characters are unnamed and appear less after Mendo makes his debut.

Megane (メガネ) is the leader of the Stormtroopers, whose nickname means "eyeglasses". His real name is Satoshi (サトシ) ("Alvin Seville" in most foreign dubs), revealed in the final episode of the anime. An otaku in every sense, he loves Lum immensely, and has sworn to serve her. Megane has a strong personality and generally directs the schemes of the Stormtroopers to gain Lum's attention (though mostly for himself). He closely monitors the actions of the others to prevent them from looking at other girls, and to ensure their complete loyalty to Lum. Though usually antagonistic towards Ataru, he often hangs out with him in his spare time. He is often given to loud, rambling philosophical musings and outbursts, and seems to have an affinity for fascism and communism. He is voiced by Chiba Shigeru in Japanese, by Marc Garber (Those Obnoxious Aliens), Colin Hackman, and Craig Wollman (movies) in English.

Perm (パーマ) is one of the Stormtroopers, whose nickname is derived from his hairstyle. He is tall and skinny (though his nameless manga counterpart has quite a fatter form) and his real name is Kosuke. The anime's version of the character is the counterpart to the manga's Kosuke Shirai. Perm displays the most character development, including being the only one of the Stormtroopers to have a visible girlfriend. He is voiced by Akira Murayama in Japanese, by Adrian Monte, and Jonathan Guggenheim (Those Obnoxious Aliens) in English.

Chibi (チビ), real name Akira (アキラ), is a Stormtrooper often seen with Kakugari. His nickname is derived from his height; "chibi" means "small" or "short". He is a timid crybaby, speaks with a cracked voice, and is often beaten up by the rest of the gang. He also has buck teeth (though his nameless manga counterpart does not have this). He is voiced by Issei Futamata in Japanese, and Steven Paul in English.

Kakugari (カクガリ), real name Hiroyuki (ヒロユキ), is a Stormtrooper with a large build. His nickname is derived from his hairstyle; "kakugari" means "crew cut". He is the least used of the Stormtroopers, often seen with Chibi. He is also the one who beats up Chibi the most. He is voiced by Shinji Nomura in Japanese, and Langley McArol in English.