1-1. I'm Lum the Notorious! This episode opens with a baseball game and Ataru getting hit with a left field flyball. Ataru is soon escorted home and discovers he's been chosen to fight an invading alien force's champion in a 10-day game of tag. If he loses, the aliens will invade. But if he wins, the aliens will go home. Ataru isn't at all willing to play tag until he sees the alien's champion: the beautiful Lum. 1-2. It's Raining Oil All Over Town This episode opens with Ataru friends Megane and Lum's Stormtroopers at school who are watching films of the tag game. In this episode, a space taxi gives Ataru a ride home by accident and the fee is...too much. Since Ataru cannot pay, the space Taxi Collection Agency starts stealing all the oil in the world.

2-1. Space Mail Arrival of Ten-chan! This is the first episode with Jariten, Lum's cousin. Jariten arrives in a giant peach and he and Ataru are enemies at once. 2-2. Mrs. Swallow and Mrs. Penguin This episode opens with Lum putting on makeup to go meet Darling at school. A swallow swallows some food Jariten gives it and it grows such that it looks like a penguin. It's appearance in school is just the start of a full day of panic.

3-1. The Metamorphic Handsome Man Rei is Here! This show features the first appearance of Rei, Lum's former fiance. This episode opens with Ataru in his room watching a storm, and Lum trying to coax him to bed. Shinobu meets Rei and brings him to Ataru's house. After a lot of arguing, Rei challenges Ataru to a duel for Lum. 3-2.Drop Dead, You Lady-Killer! Ataru, Megane, and friends are going to a Gyudon restaurant for lunch and are quite shocked to see Rei munching down food like a black hole. During the rest of the episode, Rei is chasing Lum, Ataru and friends and as the chase goes on, the chaos grows on.

4-1. Kintaro of the Autumn Sky First episode with Kintaro, the vicious little boy with the pet flying bear and the red haired alien nanny. Lum and Jariten meet Kintaro inside a wind carp, and Kintaro tells them he's was looking for his nanny in the carp. Ataru, Shinobu, Lum, and Jariten try to help Kintaro find his nanny by asking around. 4-2. Live Vigorously! Kintaro's nanny, with Ataru's help takes the alien children on a tour of Earth and a Earth child's school. Ataru tells the myth of the real Kintaro who grew up in the wild and slew a demon. So Kintaro decide to live up to his name.

6-1. Love Triangle Black Hole Ataru is phoning Shinobu in order to make plans for a date, when Lum interrupts and get's Shinobu mad at Ataru. Ataru throws Lum out and spends the rest of the episode trying to contact Shinobu. But Lum is persistent and uses a ray to jam the phone lines. But this ray also has the side affect of making a plane and a helicopter vanish. 6-2. Hey Hey, It's a Little Demon Walking home from school, Ataru is assaulted by a group of black cats and gets a nasty bump on the head. At midnight, he is using two mirrors to look at the bump, when a little demon pops out of the mirror. The demon proves to be too much for Ataru and Mr. Moroboshi, so they get Cherry to exorcise it.

7-1. The Scary Electric Shock! Cherry gives Ataru some yellow ribbons which when tied to her horns, negate Lum's powers. In order to coax Lum into wearing them, Ataru has to put on a big charade of really loving her. 7-2. The Doll of Ill Will After an odd loss of control of his body after dinner, Ataru finds out Lum has some clay for making voodoo dolls. Ataru takes full advantage of the situation until Lum make a doll of Shinobu, and Ataru tries to get it away from Lum.

8-1. Neptune Beyond the Closet First appearance of Oyuki, Lum friend and queen of Neptune. Oyuki also has incredible ice powers. Megane and friends visit while Shinobu is nursing Ataru, who has a cold; and they discover a gate to Neptune in Ataru closet. By accident, they go through this gate and arrive on Neptune to be greeted by Lum and Oyuki. 8-2. The Confusing Dinosaur Age While Ataru is flying an ultra-light, with Lum and Jariten tagging along, Kintaro crashes into him. With the help of Lum's electric shock, the crash send them all back in time to the dinosaur age.

9-1. Sleeping Beauty Princess Kurama First episode with Kurama, the karas-tengu princess. On a field trip, Ataru and friends accidentally meet a karas-tengu who takes Ataru to marry Kurama. Kurama then tries to reform Ataru to be her perfect husband. 9-2 Athletic Woman Hell! Kurama uses a weird dimensional door to try and cure Ataru of his lechery. Inside the door, Ataru faces hostile versions of the girls he loves.

10. Pitter-Patter Christmas Eve Megane and Lum's Stormtroopers set up a plot to embarrass Ataru and get Lum to leave him at the same time. They set up a date who will make a fool of Ataru, but Lum finds out and twists things around.

11. Ataru Genji Visits Heinkyo First appearance of Mendo, the rich noble; but it is not until episode 27 that he really does anything. Mendo tells a tale about ancient Japan featuring the normal cast in a slightly different alien invasion story. The aliens this time, all look like a bunch odd barbarians, except for a pretty girl and her young boy cousin.

13-1. Hawaiian Swimsuit Thief Ataru, Lum, Shinobu, Sakura, Megane, Cherry, and others are staying at a beachside resort. During the day, an octopus is stealing peoples swimsuits, but it appears to look like Cherry is doing it. At the end, they find the octopus and beat him up. 13-2 Full Course from Hell Still at the resort, the group meets some maniac who is having an all-you-can-eat contest. Sakura reveals the secret of her figure to be a diet pill called ""Beauty Foods."" But we really know the real reason is Sakura can just plain eat like a whale, and we see her do so as she beats Ataru and Cherry in the contest and clean the maniac of all his food.

14-1. Mendo Arrives With Trouble! Mendo returns for a formal introduction on his first day at school. He and Ataru have a duel for presidency of the class which ends in a tie. So they have a duel with cannons, which Ataru wins with help from Lum. 14-2. Constellation-Go-Round Lum's computer tells her that Mendo is really the best choice for her lover, so she brings a set of constellation scales to school and weight Ataru versus Mendo in a series of test in the scales. At the end, the scales break and we see the class as constellations.

15-1. Great Kiss War First appearance of Benten, Lum's best friend the goddess. Lum takes Ataru to another planet to help in a battle against Benten's family. The battle consists of catching stones in bowls on a giant set of scales. Ataru starts playing with Benten and ends up messing up the entire game. 15-2. The Benten Corps' Return Match Benten and her girl biker friends come to Earth for another round of fun. Ataru sides up with Benten again, and Lum recruits Jariten and some people dressed as demons.

16-1. Oh, Lonely Teacher! First appearance of Kuribayashi Sensei Ataru and Kuribayashi are enemies from the very start. Then Lum shows up and Kuribayashi falls in love. Finally Lum goes out with Kuribayashi in hopes on lightening his spirits. 16-2. Terrible Inspection Day On a day when students mothers come to school, Mrs. Mendo and Lum's mother get into a dispute and Mrs. Moroboshi acts as judge by setting up a roulette game.

17-1. Fourth Dimensional Camera Mendo bring an antique camera to school that sends Ataru off into other worlds. Lum manages to find him through a class room window that had been stuck for years. 17-2. Demonic Jogging Every morning, Ataru goes jogging early to see girls. On the way to school, Ataru breaks the fall of an attempted suicide as he was grabbing for a 100-yen coin below her. Ataru and Mendo get into a dispute over who is more noble and end up playing a game of tennis.

18-1. Girl's Day! Ran-chan's Arrival First appearance of Ran, Lum's childhood friend. During a small celebration at the Moroboshi house, a little doll enchants Ataru to follow it to Ran. Ran tries to kiss Ataru to drain his youth, but Lum shows up. 18-2 Ran-chan's Introduction Ran invites Lum, Ataru, and Ten over for cookies and tea, but her real plot is to suck Ataru's youth. Ran makes a double of Ataru and tries switching them, but she gets confused and loses the real Ataru.

20-1. Sleeping in Class on a Wonderful Spring Day During math class, Kuribayashi and all the students fall asleep, save for Ataru and Mendo. Lum arrives and finds out that a tiny old man and girl are responsible for this magic. The tiny girl then uses some more magic to have a party with Lum, Ataru, and Mendo; until the principal arrives with some parents. 20-2. Peach Blossom Poetry Contest Lum, Mendo, Shinobu, Ran, Ten, Sakura, and Cherry all are in a blossom orchard for some traditional reason. Ataru is in the blossom orchard for a picnic. Cherry's chanting summons some sort of woman spirit, whom Ataru runs off and meets with a giant.

21-1. Duel! Ataru vs. Ataru Ataru eats a lollipop Lum gave him and gets a mouth burn. Running off, he finds Cherry and a weird melon, which Ataru eats to cool his mouth. The melon causes Ataru to split into two Ataru's, one polite and the other casual. The two continue to fight all day. 21-2. Waking to a Nightmare Sleeping in class, Ataru has weird dreams which he relates a little of as he occasionally talks in his sleep. Annoyed, his classmates wake him and a dream demon comes out from Ataru's sleep.

19-1. Diary of Sorrowful Tomorrows Lum acquire's Ataru's diary that has written in events that will happen throughout the day. Ataru tries to use it to his advantage, but the records in the diary are not quite how they first read; making use of puns or ambiguous statements. 19-2. Whose is this Child? Mendo finds an alien child in his locker and goes through great lengths to hide it from everyone. Later after everyone has found out, a whole mob of these alien children arrive, just for Mendo.

A pair of spirits take advantage of a beautiful spring day and put the entire class to sleep, but Ataru, Mendou, and Lum manage to stay awake! The gang goes to recite poetry under the peach blossoms, but a few larger-than-life characters come to join them. Source: crunchyroll

When Ataru eats one of Lum`s candies along with a manju from Cherry, he splits in two! After a late night of playing hanafuda, Ataru finds himself trapped in less than beautiful dreams by the dream weaver Mujaki and his partner Baku. Source: crunchyroll

Lum returns to her home planet unaware that her father is throwing her a matchmaking party. Ataru (who knows about the party) and Ten follow her.

On a school field trip, Ataru gets involved with Kappas, and a limestone cavern reveals Mendo's greatest weakness.

Ataru and Ten switch bodies after wearing special earmuffs.

Ataru becomes the owner of a white caterpillar with a ravenous appetite.

Ten develops an unrequited crush on Sakura.

Dracula arrives in town and sets his sights on Lum as his next victim.

Lum travels back in time in order to meet a younger Ataru and cure his libido.

Ataru and Ten compete for the attention of the pretty female proprietor of a flower shop.

The gang meets Tsuyuko, a girl who seems to bring rain wherever she goes.

Ten's horn falls off during a fight with Ataru, leaving him weak and unable to breathe fire. Ataru wastes no time in taking advantage of the situation.

Chaos ensues at the library after the characters in the books start coming to life. Wendy Darling (from J.M. Barrie's Peter Pan novel) enlists Ataru and Lum's help in restoring order.

Lum starts attending Tomobiki High, but finds herself having a few problems with an eccentric teacher and the overly dramatic captain of the girls` volleyball team. Source: crunchyroll

The gang runs into a quiet, but friendly goblin who lives at the bottom of swimming pool! However, everybody starts screaming when he pops up to say "hello!" Source: crunchyroll

After getting worked up over her shared childhood with Lum, Ran starts attending Tomobiki High as part of another revenge plot. Source: crunchyroll

The gang`s enjoying a laid-back period of study hall when Rei comes flying in to crash the party! Source: crunchyroll

Onsen Mark is convinced that a mythic figure known as "The Mysterious Red Mantle" will appear to terrorize the students` upcoming disco party! Source: crunchyroll

Lum makes a copy of Ataru when she catches wind that Ran is targeting him once again. However, Ran ends up making a few copies of her own! Source: crunchyroll

Lum and Ataru actually go out on a date for once! Source: crunchyroll

When the gang ends the summer with a trip to beach, they end up ticking off a vengeful watermelon spirit and run into a rather sentimental goblin. Source: crunchyroll

When a typhoon comes blowing through Tomobiki Town, the Moroboshis are sent into a panic as they try to brave the storm. Source: crunchyroll

After Lum and Ten get drunk eating pickled plums, they go on a rampage to find more! Source: crunchyroll

On the night of a full moon, Ataru finds himself in a wild catfight for the hand of a mysterious beauty. Source: crunchyroll

Lum mysteriously disappears after Ataru claims that she ruined his life! Source: crunchyroll

Benten and Oyuki stop by Tomobiki High to see Lum, but they can`t seem to get away from her fast enough! Source: crunchyroll

The teachers organize a strike force to catch students sneaking out for lunch... and the gang`s in their crosshairs! Source: crunchyroll

The gang sets out on a peaceful mountain hike to get away from the noise of the city, but a crew of tv supernaturalists end up making quite a racket! Source: crunchyroll

Kurama returns hoping to reawakened by someone other than Ataru this time around. Even though she doesn`t get her wish, Kurama`s somehow under the impression that Mendou woke her up instead! Source: crunchyroll

When Ten takes a bite out of Ataru and infects him with an alien dental aliment, it spreads like wildfire throughout Tomobiki High! Source: crunchyroll

Ataru infiltrates the Mendou Estate when he discovers that Shutarou has a sister! Source: crunchyroll

Ten brings a huge, kotatsu-loving cat home to the Moroboshi House, but the little guy`s new furry friend has set up shop in the middle of the stairs! Source: crunchyroll

When Ataru saves a tanuki disguised as a crane, the furry fellow stops by his house to repay the favor. Source: crunchyroll

Ataru goes hunting for a part-time job and finds himself following up on a real weird offer. Source: crunchyroll

Lum brings the class together for a big year-end shindig, but things are a little more elaborate than just a simple pizza party. Source: crunchyroll

In the fifth year of the Keicho Era, Onsen Mar-we mean Onsen Musashi, heads out on a journey to garner fame and runs into a colorful cast of characters along the way! Source: crunchyroll

Onsen Mark woke up on the wrong side of the bed today and his students seem determined to make his bad day even worse! Source: crunchyroll

Lum`s dad finds himself in the doghouse and on the Moroboshis` couch. Can he patch things up with his wife before he eats his hosts out of house and home? Source: crunchyroll

While on vacation at a ski resort, Ataru and the gang race to find a treasure that will win the winner a kiss from the resort`s Snow Queen! Source: crunchyroll

Ten finds himself in Ataru`s shoes after a young girl by named Mako confesses to him on Valentine`s Day! Source: crunchyroll

Ataru causes another ruckus when he starts messing around with strange balls that show the viewer who they`re fated to be with! Source: crunchyroll

Lum and Ataru are invited to a rather extreme masquerade party at the Mendou estate! Source: crunchyroll

Lum`s doing her best to keep her alien cold from spreading, but Ataru doesn`t take it seriously and the bug infects the class! Source: crunchyroll

After the gang run into her and her eccentric father on the beach, a rough and tumble tomboy by the name of Ryuunosuke starts at Tomobiki High. Source: crunchyroll

After watching the cherry blossoms with Lum, Ataru has something important to share with Megane. However, Shinobu starts panicking when she overhears the pair talk about "giving something up." Source: crunchyroll

Ryuunosuke has seemingly fallen for Ran, but little does the tomboy know that her crush is a bit much. Source: crunchyroll

Things between Ataru and Lum are on the rocks after she forgets his birthday. Source: crunchyroll

When the gang heads out to what was suppose to be a relaxing camping trip, they can`t exactly say that they`re having a peachy keen time. Source: crunchyroll

Ataru is turned into a girl when Kurama`s tengu shoot him with a blast meant for Ryuunosuke! Source: crunchyroll

When a letter in a bottle leads Ataru and the gang to a remote island, they meet a mysterious beauty who works at a spooky inn! Source: crunchyroll

Mendou`s bitter rival comes to town and challenges the rich kid to a winner takes all game of Baseball! Source: crunchyroll

On a dark and rainy night, Shinobu crosses paths with a mysterious man who has more than few shady individuals on his tail! Source: crunchyroll

Ataru`s directing what Lum calls a "Super Violence School Movie," but that might better describe what`s going on behind the scenes. Source: crunchyroll

Sakura and Cherry end up clashing over some old baggage while on a routine house call at the Moroboshi home. Source: crunchyroll

Onsen Mark shares another one of Tomobiki High`s urban legends just before a mysterious old man approaches Ataru about a treasure buried on school grounds. Source: crunchyroll

While staying in a strange mansion, the Tomobiki High gang find themselves being picked off one by one. Source: crunchyroll

Ten struggles keep the fire in his belly when his intergalactic firefighter mother comes into town for a visit! Source: crunchyroll

After Ataru is poisoned by Ran, Lum finds herself in another dimension while on the hunt for an antidote! Source: crunchyroll

Ataru`s mother is already struggling to keep it together, but the Moroboshi matriarch finds herself navigating some strange dreams following an accident. Source: crunchyroll

Ryouko Mendou throws a Midsummer Christmas Party, but this hostess has a handful of bizarre festivities planned for her guests. Source: crunchyroll

Upon arriving at a run-down inn by the beach, a timid ghost asks the gang to help her spook the inn`s elderly residents. Source: crunchyroll

After joining the Moroboshis for dinner, Ryuunosuke realizes that she doesn`t know anything about her mother and goes to her father looking for answers. Source: crunchyroll

Ataru and the boys make a splash at the beach when they use one of Ten`s gizmos to make copies of Sakura! To get back at Ataru, Lum starts running around with a rather tall, dark, and handsome fellow. Source: crunchyroll

Ten takes desperate measures in an attempt to settle his score with Ataru once and for all! Source: crunchyroll

While on a weekend getaway at a cabin in the woods, Ataru and the gang are hunted by starchy terrors of the night! Source: crunchyroll

Lum, Oyuki, Benten, and Ran`s old grammar school teacher visits Earth to get a little payback on his former students! Source: crunchyroll

The gang travels back in time to cure Mendou`s fear of the dark, but Ataru and the rich kid are captured by Mendou`s younger self! Source: crunchyroll

The students of Tomobiki High start doing some funny things after Cherry throws some funky mushrooms into their hot pot! Source: crunchyroll

After he torches a scarf Lum knit for Ataru, Ten learns a hard lesson or two about making apologies. Source: crunchyroll

Lum and Ataru are left alone together when his parents go out for some alone time of their own! However, Mendou and the Stormtroopers aren`t keen on that idea. Source: crunchyroll

Onsen Mark`s determined to turn Ryuunosuke into a proper lady, but the tomboy is more than comfortable as she already is. Source: crunchyroll

The school`s in a frenzy over the inaugural Miss Tomobiki Contest and things only escalate as it goes on! Source: crunchyroll

Ataru seems to have an out-of-body experience after he snarfs down another one of Cherry`s arcane confections. Source: crunchyroll

Mendou wakes up from a nightmare to find Cherry laying right next to him, ready to fill the rich kid in on everything he knows about the fiendish Ataru Moroboshi. Source: crunchyroll

Lum gets just a touch jealous when an extraterrestrial snowman becomes quite chummy with her darling. Source: crunchyroll

Cherry stops by the Moroboshi house on New Year`s Day to spin a few classic yarns together! Source: crunchyroll

After waiting for what seemed like an eternity, Ryuunosuke runs off to buy the undergarment she`s always dreamed of! However, she soon discovers that getting her hands on one might not be that simple. Source: crunchyroll

Benten and the girls receive a challenge from the rival gang that stole her precious chain! Source: crunchyroll

Ran`s back with another revenge plot involving clones and since she`s already copied Ataru, why not duplicate Lum this time around? Source: crunchyroll

Megane and Chibi thought they`d just be working an easy part-time job when they started at the local noodle shop, but soon discover that they`re just small cogs in an all-out fast food war. Source: crunchyroll

Mendou tries to one-up Ataru by giving the lech a tour of his vault, but that plan soon backfires when they`re both locked inside! Source: crunchyroll