Hi! I'm Moroboshi Ataru, Number One Japanese Boy! Please date with me!

Moboroshi Ataru

Ataru Moroboshi (諸星あたる, Moroboshi Ataru?, lit. Falling star to get hit) is the most lecherous teenager in the universe[2]. He is also the protagonist of Urusei Yatsura.


Ataru is a 17-year-old student at Tomobiki High School, Class 2-4. He chases after and tries to grope every woman no matter what the situation, except his "wife", Lum. However, it is revealed on several occasions that she is the only one he actually loves. Despite this, he typically treats her like a nuisance and constantly disobeys her.

Born in April (4, an unlucky number in Japanese culture) on Friday the 13th, Butsumetsu, and the same day as a major earthquake, Cherry has referred to him as a carrier of bad luck rarely seen in this society.

Despite how stupid he seems, Ataru often displays remarkable intelligence, particularly when escaping from Lum. At times he appears to be superhuman, with the life force of a cockroach and the rejuvenation powers of a lizard, he possesses furious tenacity when trying to achieve something. As a result, he never gives up on his girl hunting, no matter how many times he fails or how bad Lum shocks him.

Ataru has occasionally let his good-natured side shine through, most notably when he took care of the class caterpillar everyone else hated and when he went on a date with the ghost of a sick girl who had admired him from afar.

Lum and few other of Ataru's friends once created an plot towards him to turn his personality upside down. This plan included their faked deaths and Mendou confronting Ataru as dressed up like him. The plan didn't work, though Ataru was quite shocked.


He is very lecherous with an idiotic personality, and often tries to escape class work. Whenever he sees or hears a pretty girl he immediately asks for their address and telephone number, but never succeeds.

Ataru constantly tries to ignore Lum but it is proven many times that Ataru cares about her, probably only hating her electric shock.



Ataru has dark brown eyes and hair with slightly tan skin.



Handsome Ataru

Ataru's outfits vary depending on the situation or weather. He is usually seen wearing his school uniform; however, during holidays he is often dressed in the appropriate attire, even at times kimonos or robes, and in the winter when not at school he commonly wears scarves or jackets. At home, like most Japanese, he never wears shoes; otherwise at home his clothes are best described as slovenly or sub-casual -- things he changes out of when he leaves the house. This is particularly true during the summer months, as notable in Beautiful Dreamer. He's also shown as pretty buff in the anime.

Powers and Abilities

He has "cartoony" superhuman abilities. Being able to do incredible things just because the author wants him to do. He can catch a blade with his bare hands and can defeat a judo trainer with a single throw. He also has shown to have very good stamina as well as running speed when he chased Asuka. He is one of the special students that need to be chained with an iron ball in order to make it a fair competition in a school event.


  • Lum - Ataru met Lum when he was randomly selected by a computer to represent mankind in a game of tag with the fate of the Earth on the line (Lum herself represented the Oni race). When it looked like Ataru would fail, Shinobu (his girlfriend at the time) promised to marry him if he won. Determined to do "the stuff that married people do", he succeeded in catching Lum and then loudly declared "Now I can get married!!" However, Lum mistook this as a proposal to herself and the two were immediately engaged. In the beginning he is cold-hearted towards her and saw her as a nuisance preventing him from girl hunting, but by the time of the story "A Night Alone!!" (夜を二人で!! ,, Yoru wo Futari de!!?) (Vol. 18) he was completely okay with sharing a bed with her. He is also shown to be quite jealous if another guy gets to close to Lum (ex: Rei, Shuutaro, Shingo, the Dolphin, etc). In the story "The Gloves of Love and War" (愛と闘魂のグローブ,, Ai to Tokon no Gurōbu?) (Vol. 21), in which he accidentally puts on boxing gloves that force him to grab and punch anyone who gets close enough to him, he continuously puts his own face in front of Lum's each time she gets too close, punching himself instead. This is just one of many instances when Ataru does everything he can to protect Lum from physical harm. Near the end of the series, in the story introducing Inaba, he decides to protect the future where he and Lum get married. In the final story they have another game of tag, this time with the Earth's memory of Lum and everything that has happened since her arrival on the line. Lum will let him win if he just says "I love you", but he refuses and tries to catch her himself. However, in the end, he indirectly says "I'll love you forever" when Lum sees that he had kept something of hers (her old horns). She allows him to catch her and continues to live on Earth with him. In the last panel of the series, Lum says that one day she'll make him actually say it, to which Ataru responds "Only on my deathbed".
  • Miyake Shinobu - He and Shinobu have known each other since they were little seem to have been friends.
  • Mendou Shuutarou - He and Mendou share a rivalry
  • Ataru's Father
  • Ataru's Mother
  • Ruu - Descendant of Lum and Ataru.




NameWhat They Call AtaruWhat Ataru Calls Them
Miyake ShinobuAtaru-kunShinobu
Mendou ShuutarouMoroboshiMendou
Fujinami RyuunosukeMoroboshiRyuu-chan
Shirai KousukeAtaruKousuke
CherryMoroboshi AtaruCherry
PrincipalMoroboshi-kunKouchou (Principal)
Ryuunosuke's FatherUnknownOyaji
BentenLum's Husband / MoroboshiBenten-sama
Lum's FatherSon-in-LawOtou-san
Mendou RyoukoMoroboshi-samaRyouko-chan
Mizunokouji AsukaUnknownAsuka-chan


  • "Hey, hey, hey...What's your address and phone number?"
  • "I refuse! I'd sooner go to Iscandar than fight and be killed by an Oni!" [note: "Iscandar" is a reference to "Space Battleship Yamato" / "Star Blazers"]
  • "But to grab those horns, naturally I've gotta grab the body first..."
  • "When will you learn that I always do things without thinking of the consequences?"
  • "I'll never forget, I'll... never... forget..., I'LL NEVER FORGET!, Lum..."
  • "You idiot, if I say "I love you" under these circumstances, how do you know if I was telling the truth?"
  • "Sighs...At my age, I already have a woman who follows me around thinking she's my wife. Oh! My youth's rotting away!"
  • "Behold! My secret "Flip-Up-The-Skirt" manoeuvre!"
  • "I...I'm always kind! And I just thought it would be sad to break a ghost's dream."
  • "Darn right! Ever since that alien pyscho decided she was my 'fiancée' life's been nothing but wretched! Dumped by Shinobu, zapped by lightning every time I make a pass at another girl! And now she flies happily off to marry some guy her family has picked out for her. Dear readers! I ask you: do I deserve such torment!?"
  • "Well, you see, I want to be free from a girl, because I want to keep loving her."


  1. Though the protagonist of the series is often thought to be Lum, Takahashi has stated that she had always meant for it to be Ataru.
  2. In Legend of the Galactic Heroes, the womanizing Oliver Poplan is described as the "Ataru Moroboshi of Iserlohn". Later, Poplan would be voiced by Ataru's seiyuu, Furukawa Toshio, in the OVA version. This might've been done intentionally as both were produced by Kitty Films.
  3. Ataru's birthday is supposed to be April 13th, on a Friday, and on Butsumetsu. However, assuming Urusei Yatsura begins in 1978 (the year it's serialization began), this would make him 27 at the beginning of the series, as the last time before 1978 that those days fell upon one another was in 1951.
  4. Ataru makes a few cameo appearances in the TV anime versions of Takahashi's Maison Ikkoku and Ranma ½ (both also produced by Kitty Films). In several early episodes of Maison Ikkoku, Ataru (along with Shinobu and Lum's Stormtroopers) appears as a kindergartener on his way to and from school. In a notable scene from Ranma ½, Shampoo, demonstrates a cure that will supposedly rid Ranma of his curse. The potion turns a small dog into Ataru.
  5. As stated, Ataru was supposed to end up with Shinobu instead of Lum, which is why she is absent for the second volume of chapter 1(as she was meant to be a one time character); this was when Urusei Yatsura first appeared in a magazine before it became a full manga. But fans really liked Lum and begged for her to return, so Takahashi made her Ataru's new love interest Lum.
  6. Ataru is actually good at volleyball, and managed to be captain of the boys team.
  7. His seiyu, Toshio Furukawa, would then provide the voice of Sakamoto, a character from Maison Ikkoku (Rumiko Takahashi's second major manga series).


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