The cast of Sgt. Frog
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The Keroro Platoon
", a rather hapless Alien Invader
who spends more time doing chores and goofing off than he spends actually trying to invade. His plans usually take the form of Zany Schemes
that blow up in his face in various amusing ways
- Adorkable: In moments when he's genuinely excited about something, he expresses a child-like enthusiasm that is just too cute for words.
- Anti-Hero: The loser type, most of the time.
- Bullying a Dragon: His relationship with Natsumi in a nutshell.
- Becomes a literal example when Warrior-Style was introduced in the manga.
- Crouching Moron, Hidden Badass: Rarely — very rarely — shows signs of this. In Volume 17, he stops Zoruru dead with a single shadow-wreathed look and a stern order. Then he does the same thing to a Kiruru unit in Volume 20.
- He also kicks a lot of ass in the movies. Notable examples include: him being turned into a dragon in the fourth movie and proceeding to kick his entire platoon's dragon asses. Note that when he transformed, Keroro, like the rest of his platoon, forgot all about his mission and who he was and while the audience were privy to the other platoon-turned-dragon members thoughts, we do not hear Keroro's at all.
- In the third movie, Keroro engages his evil clone in a mecha duel to protect Fuyuki and holds on his own fairly well before he was downed. After reuniting with Fuyuki and finding Dark Keroro still alive, he angrily runs over and slaps the clone hard enough to send him flying.
- Explosive Overclocking: Occurs if he manages to get oversaturated with water, briefly unlocking the Keroro From Back Then before he's brutally Brought Down to Normal again.
- Idiot Hero: Whenever he and his platoon are charged with saving Pekopon from other alien threats and not being the "threat" themselves.
- Informed Ability: Supposedly a decorated war veteran, but (almost) never shows any of the competence and bravery you'd expect. A manga chapter eventually explaines why: Just before his first assignment, powerful aliens attacked and were obliterating Keron's forces. Keroro, unaware of all this, uses a port-a-potty which transforms into a space ship, takes off and single-handedly defeats the enemy, then lands. Completely oblivious to what just happened, he steps out to a hero's welcome and promotion to command of his squad.
- Improbable Weapon User: In many video games, he draws from his collection of toys and cleaning supplies to help him out—the vacuum is a particular favorite.
- Jerkass/Jerk with a Heart of Gold: Wavers back and forth.
- Loser Protagonist
- Man Child
- The Neidermeyer: While everyone admits he's incompetent, only Giroro openly hates him.
- Otaku: Of the Gundam variety but also obsesses over the Admiral Geroro manga, space bikes, and trains, surprisingly enough.
- Trademark Favorite Food: The Funimation dub exaggerates his love of hamburgers (or "cow flesh").
- Transformation Trinket: The Keron Star, which lets him transform into a pre-peace treaty weapon called Warrior Style.
- Verbal Tic: Frequently ends his sentences with "...de arimasu!"
- Villain Protagonist: Largely a Harmless Villain, of course.
- Weaksauce Weakness: Banana peels. He's compelled to step and slip on them.
The team's youngest member, made obvious by the fact he's still got tadpole features. Despite his cuteness
, he's got a hair-trigger temper, a massive
jealous streak, and likes firing his laser when provoked. Also, he loves
. Suspects that he's the only one actually taking the invasion seriously anymore. Hopelessly crushing on Natsumi ever since she beat him up during their first fight.
- Amazon Chaser: For Natsumi.
- Berserk Button: Anything that threatens Natsumi.
- BFG: His Weapons of Choice.
- Blood Knight
- Butt Monkey: Mainly Kururu's.
- Can Not Spit It Out
- Charm Point: His belt.
- Clingy Jealous Frog: Has his moments. In the manga, became so intensely jealous of Koyuki after she first arrived that he attempted to Murder the Hypotenuse. Lampshaded by Tamama's gloating thoughts about finally understanding the Corporal.
- The Comically Serious
- Expressive Hat: The skull on his hat.
- Good Scars, Evil Scars: A massive one on his face.
- Gratuitous English: Sometimes his battle cries veer into this. Including, at one point: "This! Is! SPARTA!"
- Green-Eyed Monster: Gets this way over Natsumi from time to time.
- Hand Cannon: Another favored weapon.
- High-Pressure Emotion: Again, commonly set off by Natsumi. In several instances, just sitting around brooding causes him to emit such an intense heat that the others notice and complain/comment on it.
- High-Pressure Blood: Early on in the manga, he also tended to bleed profusely when experiencing such intense emotions. Thankfully, that particular quirk seems to have fallen by the wayside.
- Hyperspace Arsenal: Can access his weaponry at any time thanks to Keronian technology.
- Jerk with a Heart of Gold
- Love at First Punch: He met Natsumi as he was trying to take over the Hinata house. She punched him so hard that his eyes were spinning in his head. Giroro fell in love with her as he fell to the floor.
- Love Makes You Crazy: He doesn't seem to be careful about himself...
- Giroro Needs Natsumi
- More Dakka
- Murder the Hypotenuse: In the manga, he attempted this on Koyuki right after her introduction.
- Perpetual Frowner
- Pet the Dog: Or cat, in this case. Mostly focused around his pet cat and Natsumi. However, he has his moments with Fuyuki, Keroro, and the rest of the platoon.
- Primal Fear: Terrified of ghosts.
- Stay in the Kitchen: Part of his tsun-tsun act in the manga involves him making comments along these lines to Natsumi.
- Tsurime Eyes: He does have noticeably pointy eyes...
- The Worf Effect: Despite being the hard-boiled soldier who has a considerable reputation for martial prowess, Giroro often gets incapacitated by the current threat of the chapter/episode. This tends to occur before he could even fire a single bullet.
Sergeant Major Kururu
The team's intelligence officer
. Incredibly smug and self-satisfied, Kururu is constantly inventing all sorts
of weird stuff, but few of these are actually meant to help the invasion... they're just for his own amusement. Loves giving Keroro just enough rope to hang himself, over and over and over again.
- Brilliant but Lazy: If he isn't amused by what's going on, it requires either cash payment or physical coercion to make him actually expend effort for anything.
- Clarke's Third Law
- Creepy Monotone: Excitement makes his voice rise. This makes him even creepier.
- Evil Laugh: KU KU KU KU KUUU...!
- Face Framed in Shadow: He perpetually has a shadow cast over the middle of his face, regardless of the actual lighting.
- Four Eyes, Zero Soul
- Gratuitous English
- Handy Remote Control: Always seems to have one around.
- Hidden Heart of Gold: More obvious in the manga, where he has several moments showing that for all his Jerkassery, he really does care about the rest of his team.
- A notable moment of this in the anime is when he saves fellow Wave buddy Saburo (spending the month's entire invasion budget in the process) without hesitation.
- Ho Yay: Deliberately invokes this with Giroro in the anime. Whether he's doing this just to screw with his head or out of some incredibly warped actual affection...
- The Hyena
- I Just Want Friends: During the Funmation Dub anime New Year's Special he off-handedly mentions at one point he just wants to be loved.
- Insufferable Genius: He makes a point to rub in how smart he is to everyone's faces.
- It Amused Me/For the Evulz
- Jerkass: Oh boy.
- Mad Scientist
- Nerd Glasses
- Odd Friendship: With 'Wavelength Buddy' Mutsumi. They aren't even shown interacting all that much, but they seem to be very buddy-buddy.
- Omnidisciplinary Scientist: Excepting medical science, Kululu singlehandedly functions as the go-to frog for any kind of invention.
- The Plan- Sometimes he dabbles in these.
- Pet the Dog: At times, actually shows signs of caring for others. One episode involved an actual puppy, complete with Natsumi and Fuyuki freaking out over what he might do to the poor thing.
- A good example of the anime Flanderizing his character is their removal of two of his key moments during the Garuru Platoon's introduction: encouraging Keroro to keep resisting after losing contact with the others and opening a trap door underneath Keroro to force him to escape while he attempts to hold off Garuru armed with only his headphones. By contrast, Anime!Kururu simply retreats into his Hacker Cave, letting Keroro think he's abandoned him.
- Scary Shiny Glasses: If you see him do this, it's already too late.
- The Scrappy: In-universe; The Keroro Platoon are huge celebrities on Keron, except for Dororo (who nobody seems to know about) and Kululu (who is actively despised).
- Secret Keeper: For 623 in the anime. When Giroro finds out that Saburo is 623 and confronts Kululu about it, the latter erases his memory about it.
- Signature Laugh: Kukuku...
- Spell My Name with an "S": Kururu/Kululu. The English translation of the manga actually switched from Kururu to Kululu around Volume 10 or so, then switched back later on.
- Stalker with a Crush: Maybe towards Aki.
- Takehito Koyasu
- Token Evil Teammate: While they're technically all villains, he still fits.
- Transformation Ray: One of his favorite gadgets to build.
- Trickster Mentor: Certainly isn't above manipulating the others into self-improvement.
- Witch Doctor
Lance Corporal Dororo, nee Zeroro
The team's token Ninja
. Used to be a painfully shy
, sickly child
, and so clung rather desperately to his friendship with Keroro... something Keroro shamelessly exploited, leaving him traumatized to the point that any reminder of these abuses triggers his 'Trauma Switch'
and sends him into the nearest corner
. Grew up to become an assassin, then got separated from the others on Earth and found acceptance and peace with a group of ninjas, leading to him changing his name and outlook on life.
- Apologises a Lot
- Beware the Nice Ones: That cute little tadpole became an assassin. Then a ninja.
- Big Fancy House
- Blue with Shock: Trauma Switch, on!
- Break the Cutie: Played for Laughs
- The Chew Toy
- Corner of Woe
- Extreme Doormat: Keroro treated him horribly when they were little, and Zeroro still stuck by his side. He grew out of this in the manga; sadly, anime!Dororo still gets trampled over regularly.
- Failed a Spot Check: Often on the other end of this, with others forgetting about him or failing to note his presence.
- Flanderization: In the manga, still doesn't show up very often, seems to have largely gotten over his childhood issues (though he has his moments), and is typically calm and collected. In the anime...
- Heroic BSOD: Goes into these regularly. Shows up far less often in the manga.
- Ill Boy: As a child, was terribly sickly and always wore a surgical mask.
- I Want My Beloved to Be Happy: When Koyuki had her ninja skills/memories sealed away, he was willing to let her live a happy, normal life, even though she could no longer see him.
- Lonely Rich Kid
- Ping-Pong Na´vetÚ: In the anime, he often winds up asking "Keroro, are we really friends...?", yet never actually learns from his past experiences and is easily shocked back into his corner of woe by Keroro's latest transgression.
- Powered Armor: The H-to-H Assassin suit (which bears more than a passing resemblance to Zoruru's enhancements...)
- My Hero Zero
- My Kung-Fu Is Stronger Than Yours: Dororo having trained as a ninja on Earth gives him a valuable edge against Keron-trained Assassins. Even his former superior Jirara is eventually beaten.
- New Powers as the Plot Demands: The manga doesn't spotlight him very often, so it's not unusual for him to abruptly show up and whip out a new Assassin Art or Ninja Art and bail the others out.
- No Mouth: Always shown wearing a ninja, assassin or medical mask.
- Shrinking Violet
- Shy Blue Skinned Boy
- The Quixote: At least in the anime, where Koyuki is about the only one who sympathizes with his idealism.
- Technical Pacifist: Never wants to hurt others but often fights to protect His friends(or "so-called" friends...).
- Token Good Teammate: Especially in the manga, which is one of the reasons that He isn't very popular with those teammates.
- Trauma Conga Line: The anime just loves playing this for laughs, especially during flashbacks to the frogs' childhood.
- The Unfavorite: Thanks to being too nice for his team, he isn't always popular with his "friends"... assuming they notice/remember him. Extends to his portrayal within Keron Force media (such as being seated behind a plant during a news conference).
- With Friends Like These...
(Shin) Keroro/New Keroro/Keroro-2
The youngest member and the sole member of the second Keroro platoon. Excitable and naive newcomer. Also the sole soldier within the Keron Army after 100 years.
A timid Nice Guy
who loves the occult. Very introverted, but he's compassionate and polite, and very inquisitive about the world at its weirdest.
- A Boy And His Alien Frog Bent On World Domination
- Adorkable: Particularly when the discussion of occult is involved.
- Agent Mulder
- Beware the Nice Ones: When he snaps, all we get to see is his Battle Aura and shadowed eyes — never what he actually does.
- Even Natsumi is absolutely terrified of pushing Fuyuki too far, and Keroro, normally somewhat made of iron, was reduced to a stammering, terrified mess at whatever he did to him the first time this happened...
- Big Brother Mentor: Has a shade of this towards Tomosu in the manga.
- Chick Magnet: If it's female, and weird (weird as in a schizo billion-heiress, an Emotionless Girl with a shape-shifting space entity on her head, and a mermaid) there's a huge chance they will have a thing for him.
- Extreme Doormat: Until you push him too far.
- Friend to All Living Things: Whether they be human, alien, or monster.
- Idiot Hair
- Nice Guy: Just don't push his buttons too far...
- Non-Action Guy
- Red Oni, Blue Oni: Surprisingly, the red to Tomosu's blue in the 2014 anime. Justified since Fuyuki is much younger in this version.
- Oblivious to Love
- Strong Family Resemblance: To his mother, without the Fanservice obvious traits.
- The Other Darrin: Houko Kuwashima stood in for Tomoko Kawakami throughout her sick leave since 2008. But Kawakami tragically died on June 9, 2011, thus Kuwashima is now promoted as his permanent seiyuu.
- Unwanted Harem: He may not have an extensive fanclub like Natsumi, but at least four girls have crush on him. Only half of said girls are human.
- Weirdness Magnet: More supernatural things have happened to him than any of the other cast. Unusually for this trope, he loves it this way. Natsumi, not so much...
- Morality Pet: Is usually the one who guilt trips the sergeant to reconsidering whenever he takes a plan for invasion too far
Fuyuki's tomboyish older sister, she considers herself—correctly—to be the first line of defense against Keroro's taking over the planet. Has a massive crush on Mutsumi, and is good friends with Koyuki.
- Action Girl: The platoon unilaterally considers her Earth's greatest warrior.
- All Love Is Unrequited: Hopelessly crushes on Mutsumi, while getting crushed on by Giroro, Koyuki, several of her female classmates...
- Anti-Hero: She's technically on the side of good by protecting the Earth, even if she's a violent, anti-social brute.
- Badass Normal: She beat Giroro's web of booby traps armed with nothing but a stalk of leek during their first encounter.
- Defrosting Ice Queen: She may still be suspicious of the Keronians in general, but she also seems to become a bit of a nicer character after they arrive—in addition to Giroro, she gets on pretty well with Koyuki.
- Even the Girls Want Her: Has a considerable all-female fanclub at school.
- Girlish Pigtails
- Good Is Not Nice: She's not the nicest person around, but she is the one keeping Earth from being conquered on an almost weekly basis.
- She does later admit that she enjoys beating Keroro in particular for no reason.
- Improbable Weapon User
- Jerkass/Jerk with a Heart of Gold: Wavers between back and forth, although the former is her more common side.
- Knuckle Cracking: When those knuckles start cracking, a beating is about to ensue on Keroro.
- Hidden Eyes: A sure sign of trouble brewing for Keroro.
- Powered Armor: Her Powered 723 suit.
- Not So Different: She can be just as arrogant, self-absorbed and overconfident as Keroro at times, which is probably why they get along well.
- Moreover, she can be as violent, domineering, and no-nonsense as Giroro, which probably is part of the reason he respects her so much.
- Red Baron: According to Fuyuki in the manga, her overprotective streak during elementary school earned her the nickname Devil Summer.
- Sibling Yin-Yang
- Trademark Favorite Food: Seems to be sweet-potatoes.
- Tsundere: A vicious Type A on par with the likes of Louise.
- Wardrobe Malfunction: Every spin with Kururu's age-ray in the manga ends with her being half(Or totally) naked one way or the other.
A famous manga editor. Very self-confident and cheerful. She loves "Kero-chan" and his friends, but is usually away from home working.
Voiced by: Hisako Kyoda(Japanese) Linda Leonard(English)
Aki's mother, and Fuyuki and Natsumi's grandma. A wise old woman who lives out in the country. Considered and revered by Keroro Platoon as the top-ranking "officer" in the Hinata clan, above Aki.
Close Pekoponian Friends
Heir to a multi-billion-dollar international corporation, Momoka seems sweet and innocent at first, but has a hidden dark side related to her obsessive crush on Fuyuki. Spends tons of money on various Zany Schemes
that she hopes will help her get closer to him, with little success.
Momoka's personal servant and Battle Butler
. Always on hand to tend to her every need and slightest whim, no matter what it calls for. Also serves as a surrogate parent of sorts, as her parents are almost always off doing their own thing.
An extremely laid-back, smooth poet and artist who has an Odd Friendship
with Kururu and serves as Natsumi's Love Interest
. Runs his own radio show, and carries a special pen that lets him bring his drawings to life.
A cute, cheerful Ninja
girl who found Zeroro and brought him back to her Hidden Ninja Village
, befriending him and eventually accompanying him to the city, where she transferred into Natsumi's school
and helped him locate the others.
The NarratorExactly What It Says on the Tin
The surprisingly cute
Lord of Terror who was sent to destroy Earth as according to the prophecy of Nostradamus. Only she kind of missed her cue, and Keroro manages to convince her not to go through with it by virtue of being her beloved "Uncle". Sort of an honorary Sixth Ranger
of the Keroro Platoon, though for obvious reasons she can't show off her moves all that often.
Space Detective Kogoro
An old childhood friend of Keroro's, Kogoro is a Space Detective who always seems to be down on his luck. Despite this, he always seems cheerful, laughing and grinning no matter what
he might be thinking.
Kogoro's younger sister, and the only one who can tell how he really
feels at any given moment. As a result, she frequently has to act as a "translator" of sorts. Does her best to support her brother by taking various part-time jobs.
An Emotionless Girl
adopted by the Shapeshifting
alien Nebula, who rides around as her cat-eared headband and fights for her. He takes out her opponents and eats
aliens, all while searching for a way to help her become human
. Alisa, for her part, seems entirely uninterested in this... but shows some interest in Fuyuki.
The Garuru Platoon
First Lieutenant Garuru
Giroro's Aloof Big Brother
, a famous sniper and hero of Keron Force. Was given his own platoon, and was assigned to confront and replace the Keroro Platoon. Cue the Wham Episodes
- The Ace
- Aloof Big Brother
- Big Brother Mentor: This is more obvious in the manga, where he's introduced long before the Wham Episodes, and is clearly shown before and afterwards to be very fond of his baby brother, despite Giroro's seething jealousy.
- The Chessmaster: May have been subtly manipulating the entire battle to make the Keroro Platoon look good. More obvious in the manga, where he explicitly spares Kururu's life and sends him to take on Tororo, which turns the tide of battle.
- Cold Sniper: More in the anime than in the manga; thank you, Flanderization.
- The Comically Serious
- Friendly Sniper: In the manga, is far nicer, friendlier, and enjoys gently teasing his brother, but is still a well-respected commander.
- Heavy Metal: His music of choice.
- Red Baron, Shout-Out: Nightmare of Keromon
- Stealth Mentor
- Weaksauce Weakness: One chapter reveals he can't use chopsticks. Unless spearing his food with them counts.
- Worthy Opponent
Private First Class Taruru
Voiced by: Akeno Watanabe (Japanese) and Chris Cason (English)
A cute, if insanely energetic
, tadpole who absolutely adores
his "Master Tamama"... And, rather obviously, was tapped to be part of the Garuru Platoon, where he cheerfully played Evil Counterpart
to Tamama. Often puckers his lips up in a sort of "kissy face" expression.
Lance Corporal Zoruru
Voiced by: Kazuki Yao (Japanese)
A half-cybernectic assassin who appears to have joined the Garuru Platoon just
to get a crack at Zeroro. Would probably love
to be a Knight of Cerebus
, if given the chance. Unfortunately, he tends to be even more forgotten than Dororo...
- Artificial Limbs: A full half of his body, bisceted down the middle, has been replaced with robotics.
- Berserk Button: Being ignored.
- Black Eyes of Crazy: Zoruru had this during his childhood, and it only got more menacing when he became an assassin.
- Cyber Cyclops
- Evil Counterpart: Towards Dororo, whom he insists on calling 'Zeroro'.
- Failed a Spot Check: Like Dororo, ends up on the other end of this several times. One chapter plays with this, as he sits in on a meeting with the Keroro Platoon, taking Dororo's usual spot so that the reader's eye may glide right over him without seeing anything amiss... despite having just seen Dororo leaving with Koyuki. That's before the others take it Up to Eleven.
- Freudian Excuse: Volume 17 of the manga revealed he apparently attended the same school as Keroro and Zeroro, and was completely ignored when those two first met... despite standing directly behind Zeroro at the time.
- Hollywood Cyborg
- Knight of Cerebus: During the Garuru Platoon's invasion, he defeats and seemingly kills several of the Keroro Platoon's allies in rather nightmarish fashion, only to have this Subverted by an Anticlimax. Attempted again in Volume 17.
- Not So Different
- Red Eyes, Take Warning: One eye, red pupil, black sclera. Judging from the Flashback in Volume 17, these are his natural eyes.
- Unknown Rival: He's perfectly capable of being an excellent rival to Dororo... if he wasn't so forgettable that literally everyone stops noticing him with in seconds. He has to go out of his way to get people's notice.
- Verbal Tic: Dramatic stammering, as in "Z... Zeroro..."
An incredibly irritating tadpole who hacked into Keron Forces' computer once, got caught and was promptly recruited. Considers himself Kururu's rival, and longs for the chance to put him through the ultimate Humiliation Conga
A Sixth Ranger
of sorts for the Garuru Platoon's debut, with very
different origins in the manga and anime. The manga version is a Creepy Child clone intended to "replace" Keroro
, while the anime is a deaged, Brainwashed and Crazy Keroro
Chief Medic Pururu
A childhood friend of Keroro, Giroro and Zeroro. Originally a civilian medic, she got bored and joined the military, ending up assigned to the Garuru Platoon.
The Shurara Corps
The leader of a group of anime-only
villains who are out to steal the Keron Star from Keroro. Notably, all of the members were based on fan-submitted characters
, meaning they all ascended to anime canon
. The whole arc turned into a giant Monster of the Week
Master Painter Putata
Voiced by: Kentarou Tone (Japanese)
A spotted yellow Keronian who can bring his paintings to life. Highly excitable.
Super Marionette Mekeke
Voiced by: Cho
Putata's partner in crime and a master puppeteer who conceals himself via invisibility while fighting with his puppet.
Voiced by: Kunihiko Yasui (Japanese)
A mutant Keronian made of pure blue slime. Can transform others into mutants like him, but is weak to anything that can make him solidify.
A ghostly Keronian with a heavily scarred face, a scythe blade replacing his left hand, and a demonic symbol.
The assassin of the Shurara Corps, an older tadpole who can manipulate shadows.
Voiced by: Kurumi Mamiya (Japanese)
Once an abandoned Keronian doll, Nuii was brought to life by Shurara and made into one of his agents. She had the ability to turn everyone into plush dolls like herself, and under Gyororo's supervision, inflitrated the Hinata household in the guise of Natsumi's old teddy bear.
Nuii's superior, a Keronian covered in Extra Eyes
who can blend into his surroundings, making him a perfect spy.
Voiced by: Keiichi Sonobe (Japanese)
A robotic Keronian with scanner eyes, magnetic hands, built-in jets and the ability to fuse others with nearby mechanical objects.
Voiced by: Eiji Maruyama (Japanese)
A snowman Keronian who can summon massive gusts of arctic winds and freeze everything around him. However, he's weak against any sort of heat.
Voiced by: Kenichi Ogata (Japanese) and Greg Dulcie (English)
Keroro's famous and terrifying father. The mere mention of his name sets off all kinds
of Parental Issues
for his terrified son. However, in person, he seems to be rather laidback...
Voiced by: Sachiko Chijimitsu (Japanese)
Keroro's mother who first appeared in the KeroZero short shown before the 4th Movie. She's very loving toward her son like a good mother, but she also seems to have a tricky side to her.
- Amazingly Embarrassing Parent: She just loves to go around and talk about how wonderful her son is while offering sweets. She does this to everyone, much to Keroro's chagrin.
- Body Snatcher: Although Natsumi was the one who had the idea of switching bodies with her, with the consent of both, afterwards she just disappeared with Natsumi's body, going to sight see Pekopon and even on a date with Giroro (Even though he knew it was Keroro's mother) while Natsumi in her body got dragged to another city by Keroro's father, who didn't believe any switch had happened.
- Doting Parent
- Generation Xerox: Her son definitely got her looks.
- Mrs. Robinson: She actually went into this on Giroro.
- Shout-Out: Her design is very reminiscent of the mother in Atashinchi, who was voiced by Kumiko Watanabe, Keroro's voice actor.
Giroro and Garuru's father. Appears to have a reputation just as terrifying as Keroro's father, though he's not mentioned as often. Makes a habit of turning even the simplest tasks into 'tests' for his sons.
. Looks exactly like her son
(in a dress), and apparently passed down a lot of her personality traits, too. Whenever she sees Keroro, Giroro or Pururu, she immediately thanks them for being friends with Zeroro. Repeatedly. Over and over and over...
Voiced by: Junko Noda (Japanese) and Alison Viktorin (English)
An extremely cute Keronian tadpole
, Karara is an extremely naive
daydreamer who dreams of finding her Knight in Shining Armor
and falls in love at the drop of a hat with anyone
who helps her out. Avoids Stalker with a Crush
mainly because she runs off and does her "Bridal Training" offscreen, then shows up childishly expecting to have her affections returned...only to transfer her crush to someone else and start the whole process over again.
Karara's fraternal twin sister. Doesn't appear as much or get as much character focus as her sibling.
Voiced by: Junichi Sugawara (Japanese)
An anime-exclusive character based on a fan submition, Joriri is an unshaven bum who appears in various flashbacks
, giving the young Keroro, Giroro, Zeroro and Pururu questionable advice and generally being a poor role model. May have been introduced to add an "adult!Keroro" style character to the past, even though the younger Keroro already filled that role. Recently showed up in the present, much to the dismay of fandom
- Ascended Fanon: Joriri was originally one of the fan designs submitted to the Keroro Land mangazine, before being incorporated into the tv show.
- Ice-Cream Koan: His big gimmick involves imparting an extremely odd form of sage wisdom that doesn't make a lot of sense.
- Perma Stubble: Not an action hero, though.
- Sixth Ranger: He joins the Keroro platoon in the 6th season... for one episode. Although that event is still referenced later.
Assassin Captain Jirara
Voiced by: Kouji Yada (Japanese)
Leader of the X1 assassin troop on Keron, and Zeroro's trainer in the art of killing. Cold and merciless and wanted in several galaxies, it only makes sense that he popped up on Pekopon...
- Artificial Limbs: It almost seems like this is a requirement for spooky assassin-types.
- Drill Sergeant Nasty/Sadist Teacher: Jirara trains his underlings by making them constantly fight each other nearly to the death. If you die, you were a bad student anyways.
- However, a Flashback in Volume 17 of the manga reveals that he deliberately chose a Lighter and Softer alternative to making Zeroro a full-fledged assassin, despite acknowledging that Zeroro had excelled in his training. When his pupil begged for an explanation, Jirara tells him flat-out that the assassin's path is "darker than you can even imagine".
- Giant Spider: He takes on this form in Dororo's nightmare.
- Red Eyes, Take Warning
Another character solely from the anime. Despite his rank and the respect he apparently has, he's very... Crazy. Most of this is put in the direction of his unhealthy infatuation with Pururu. Really, really unhealthy.
Voiced by: Juri Ihata (Japanese) and Caitlin Glass (English)
A pink Keronian-like alien, known as an Axolotl. She's a highly popular and very spoiled Idol Singer
who likes to pull Ratings Stunts
An alien race of humanoid snakemen, the Vipers are natural enemies of Keronians and are dangerous, deadly predators. Most of the Vipers that show up in the anime have a personal vendetta against the Keroro Platoon, thanks to what happened to the first
Viper that targeted them. In the manga, on the other hand...
A sort of ancient Keronian super weapon that feeds off of negative emotions to gain strength and destroy planets. While not necessarily movie exclusive, they're a very big element of the first and third movies, and become a victim of the Worf Effect
in the second. In the first movie, Keroro and Fuyuki accidentally unleash one on Tokyo.
An ancient Keronian weapons specialist that sealed away the first Kiruru, but got stuck in the proverbial can with him as well. She works off of positive emotions, and is able to turn into a key, the only thing that can reseal the Kiruru and save the world.
A Maronian living at the bottom of the ocean who was feeling lonely one day and as a result, abducted Natsumi to be his princess. In the end, all he wanted was a mother figure rather than a princess.
The only other friend Meru has, despite the fact he treats her like his servant and is generally unpleasant to her. Regardless, she remains chipper and incredibly loyal to him.
The primary antagonist of the third movie. Cloned from a sample of Keroro's own DNA, taken off the Kero Ball when it was lost in an ancient Keronian facility hidden in the ancient city of Macchu Picchu in Peru.
- Arrogant Kung-Fu Guy
- Evil Counterpart to Tamama
- Homage: to Sun Wukong of the Journey To The West tale that Dragon Ball was based on. Note his 'symbol', which is really a band around him that resembles the flying cloud, while resembling Wukong's Restraining Bolt. He even uses the original 'Great Saint That Surpasses Heaven' title when he first appears.
- He's also a pretty direct reference to Goku from Dragon Ball. He uses a blue blast of energy at one point charged up similarly to the Kamehameha and, in the final battle, attempts to use the Genki Dama while fighting against Tamama and Momoka, even calling up for other people's power. One of the scenes featuring him in the credits sequence is a homage to Dragonball's original ending and another one shows him in a place very similar to the Tenkaichi Budokai tournament from Dragonball, fighting against someone with the body obscured, but wearing pants and shoes identical to Yamcha's in the 22nd and 23rd Budokais.
- Weapon of Choice: A Simple Staff WITH LASERS.
Appearing at the same time as Dark Keroro, she's the only one capable of operating their Ominous Floating Castle
, but there's something about her that even he doesn't know...
One of Momoka's old friends, and shares a lot in common with her - except that her rich parents passed away early on. All she wanted was a real family, and from the depths of Mont-Saint-Michel, someone answered...
TeraraWhen Shion attempts to breed the Earth Dragon egg hidden under Mont-Saint-Michel, the plan reaches frution and the massive Earth Dragon is hatched - but the destruction it causes to the world forces Shion to intervene, and eventually the Earth Dragon relinquishes its power, turning into a harmless little creature that resembles a salamander-based Keronian.
- Superpowered Evil Side: The Earth Dragon form, though it's officially sealed away by the end.
- Meaningful Name: Terara comes from 'terra', meaning Earth. Can also be read as referring to terror...
- Nice Hat: Shion's beret is passed to Terara at the end.
Shion's legal guardian, very similar to Paul in more ways than one can imagine.