51 episodes · 3rd April 2004
The Hinata family has a new member - a frog from outer space! Keroro’s invasion of Earth doesn’t go exactly as planned, and he ends up running a vacuum instead of ruling the planet. But hey, at least he gets his own room!
Keroro searches for his lost platoon members. Meanwhile, Momoka has a major thing for Fuyuki. She also has something in her backpack with a cola addiction and an out-of-this-world problem.
Keroro is tired of being stuck inside all day and eventually finds a way to wander around Tokyo without being seen. The Hinatas believe he is up to no good and set up secret cameras around the house.
Giroro, the weapons expert of the Keroro Platoon, has finally tracked down Tamama and Keroro. To say he is displeased about Keroro's recent leadership would be quite the understatement. He plans to whip Keroro back into shape and move forward with the Pekopon invasion.
Keroro finds the perfect addition to his Gundam model collection and uses his new allowance to travel to the Trojan Horse toy store. He's devastated to find out that the store is about to go out of business and tries everything in his power to save it.
Momoka invites the Hinata family to a private beach for a little one-on-one time with Fuyuki. Unfortunately for her, the frogs are coming along, too. She comes up with increasingly-complex schemes to get her first kiss from the boy of her dreams...
The legendary Angelmois of Armageddon descends from the heavens... but she's five years late! And what's this? She seems to be really good friends with "Uncle" Keroro... leading Tamama on a jealous campaign to get rid of her.
The Keroro Platoon builds a secret base under the Hinata household to further their invasion plan against Pekopon. They're the ones who end up being invaded when unknown intruders discover the base.
The Keroro Platoon search for another missing member - Kululu, the brains of the operation. But he's already causing havoc in the Hinata household when he invents a device that can revert adults to their "bittersweet youth."
When Keroro gets a cavity, the entire platoon is up in arms! Tiny invaders have set up a secret base inside Keroro's molar tooth, and it's time to take the fight inside his mouth!
Keroro gets word that celebrities from the universe's most popular reality show are visiting Pekopon! But you know what they say - never meet your heroes...
Sumomo, an intergalactic pop star, travels to Pekopon for a taste of normal life. / Giroro loses his signature belt, and with it, his confidence. But he's able to find respite from an unexpected place...
The final member of the platoon has been found, no thanks to Keroro. But Dororo has cast aside his previous life - he'll protect Pekopon from alien invaders, even if that means making enemies of his former friends.
The newly reunited Keroro Platoon embark on their first mission as a full team, and it's, uh... filling the town with flowers?!
There's two sides to Momoka: a normal side, and a dark side. But when a freak accident splits her into two, Dark Momoka isn't afraid to take charge.
Mois has been seen beating people up and stealing their wallets. Has she been living a dark secret life this entire time, or is something else to blame?
The platoon heads to the local swimming pool for some good old-fashioned high jinks. / Keroro organizes a ghost story competition - Aliens vs Pekoponians.
Kululu turns Natsumi into an adult so everyone can go to the beach without parental supervision. Keroro tries to win a collector's Gundam model in a duo's comedy contest.
Keroro tries to make a quick buck at the festival. / Keroro tries to make a quick buck by starting a new radio show.
The Keroro platoon conquers the bottom of the open in their brand-new submarine. The only problem is that the current residents of the ocean aren't too happy with that.
The Hinata family and the Keroro Platoon have to deal with a power failure in the heat of summer. / Keroro and Co. stow away on the Hinata's family visit, and must keep themselves hidden from Grandma.
A message from Keron HQ: Tamama is the new platoon leader! And boy, are there gonna be some changes around here...
Keroro steals the Kero Ball and accidentally makes hundreds of clones of himself. Chaos ensues.
A childhood friend of Keroro's moves to Pekopon in order to follow his dreams of being a space detective. The platoon helps him find a job that fits his "unique" abilities.
A family dispute between Momoka and her father causes an all-out war between the Keroro Platoon and the elite forces of the Nishizawa Corporation.
The Keroro Platoon engages in a mission to delay the events at Sports Day for as long as possible, so that Aki Hinata can arrive in time for the three-legged race.
Keroro's father arrives on Pekopon to check on the invasion progress, or lack thereof. / The platoon decides to drill underground, hoping to build a natural hot spring in their secret base.
The platoon experiences snow for the first time... SNOWBALL FIGHT!! / Kululu gets on everyone's bad side with his evil-hearted pranks. Who can make him see reason?
Natsumi has a starring role in the school play, but she's a terrible actress. / Members of the school newspaper suspect that aliens live in the Hinata household and are prepared to get evidence by any means necessary.
Tamama's friend comes to Pekopon to see if all the stories of the invasion are true. They're not. / Momoka will do anything to develop her body more... and Keroro takes the opportunity for a quick buck to sell her junky "fitness solutions."
Keroro runs away from home on his new flying saucer. But when it breaks down and he's stuck in the middle of nowhere, he realizes all too late what the Hinatas mean to him. How will he get home?
In an effort to gain more soldiers for the invasion, Keroro decides to turn all the animals at the zoo into humans. / Giroro has been feeling blue. The stray cat he took in seems to want to say something to him, but can't. But what if...?
The Keroro platoon wants to make their own anime the "easy way". Of course, there's no such thing...
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