Summary
Sci-fi andanimego like bread and butter. Sure, not every series fits the genre, but a lot will throw in at least one scientific element or another.Ghost in the ShellandAkiraare obviously sci-fi with their cyborgs and experiments. WhileSword Art Onlinehas its cake and eats it too by tucking its fantasy world into a virtual MMORPG.
While others just add a touch of sci-fi by throwing in an alien or two. Whether they’re comedies, romances, or harem shows, there’s a chance one of its characters will come from outer space. Some may even become iconic, like thesefamous anime alien girls. If people hadn’t seen them everywhere before, they’d find out now.
Updated on June 07, 2025 by David Heath:It’s been a while since since alien girls have been in style. They’ve largely been taken over by their fantasy-based equivalents in isekai stories, which can be similar enough with their different races, abilities, and appeal, while still being more terrestrial in origins.
That’s not to say there aren’t any sci-fi stories being made. It’s just that, if they do involve aliens, they’re not usually arriving in the form of babes wanting to learn about this human thing called “kissing” from some random joe. Still, whether they live up to that archetype, or go beyond it, there’s still room on this list for new entries. So, alongside some format changes to bring it up to date, here are some more top alien girls in anime.
12Hyatt
Excel Saga
Starting off with a divisive choice,Hyatt’s alien status depends on the source. In Koshi Rikdo’s originalExcel Sagamanga, she was just an ordinary girl who joined the ACROSS organization after seeing an advert. Whereas in Shinichi ‘Nabeshin’ Watanabe’sExcel Sagaanime, she’s a Martian princess found in the Puuchuu mothership. That’s what Rikdo gets for giving Watanabe permission to make a sci-fi episode.
Regardless, she caught on as Excel’s quiet partner in crime. WhenExcel’s ranting and raving, she’s often the peaceful voice of reason. Which is probably why ACROSS leader Il Palazzo tends to favor her more. Her only drawback is that he drops dead from bloody coughing fits on a regular basis, often several times during an episode. As troublesome as it gets for her, it became part of her charm.
11Mizuho Kazami
Please Teacher!
It’ll be no surprise to learn that some alien girls are love interests for average guys. It’s a cliché, yet it’s one that’s driven even the most iconic sci-fi series likeStar Trek. Granted,Please Teacherisn’t exactly a heavy hitter in the sci-fi romcom genre. But its titular teacher made for a striking design.
Mizuhois an alien sent on behalf of the Galactic Federation to watch over humanity. She has to keep her true identity a secret but ends up trusting Kei, the lead character, with the truth when she becomes his homeroom teacher. So now, Kei has to keep Mizuho’s secret, while she helps him with his coma-like freezes known as ‘standstills’. Which isn’t a bad arrangement when one has a hot-for-teacher crush.
10Musubi
Sekirei
As surreal asPlease Teacher’s premise is, it’s still straightforward: Kei keeps Mizuho’s secret, while Mizuho treats Kei’s health condition in return.Sekireimakes things more complicated for its protagonist, Minato, when a girl calledMusubilands right on top of him. She’s part of an alien race called the Sekirei who need an “Ashikabi”, a human with a special set of genes that can unlock her abilities.
Bound by a kiss, Minato has no choice but to aid Musubi as she takes on the other Sekirei in a fighting tournament organized by the mysterious MBI Corporation. She isn’t the only one to make Minato her Ashikabi, but she was the first and most loyal. That, and she at least asks permission for each power-granting kiss before the battle starts. She’s a fantasy come true for people who mind their manners.
9Lala Deviluke
To-Love Ru
Not that every alien girl is so welcome. Rito Yūki would rather confess his love for his school crush Haruna, but he’s too shy and awkward to do so. It only gets more awkward when he bumps intoLala Deviluke, an alien princess. She flees her planet to avoid getting paired off with one of her father’s chosen suitors. Then, when she’s about to be retrieved by her fellow Devilukeans, she says she’s going to marry Rito instead.
Frustrated, Rito now has to help Lala adjust to life on Earth and play a happy couple for Lala’s race. Especially her father, who happens to control most of the known universe. No pressure then. Lala bowls over Rito’s classmates, despite her naivety about Earth customs getting her into trouble (clothes don’t tend to be optional in public). But while her looks are an otaku’s dream, her carefree personality and compassion ultimately warm others to her, including Rito.
8Caulifa & Kale
Dragon Ball Super
Dragon Ball’s Saiyans are some of the most powerful beings in its universe, and one of its most sparse. The remaining ones are largely male, with their female ones either being things of the past (Fasha, Gine), or of questionable canon status (Forte, Viola). One could make a case for Pan as part Saiyan, though she and others weren’t really slinging Kamehamehas like their male equivalents. That gave room forDragon Ball Superto bring inCaulifla & Kale.
They’re Saiyans from Universe 6 who tackle Goku & co in the Tournament of Power. Caulifla was strong enough to destroy half of the whole arena, and could potentially reach Super Saiyan 3. While Kale is basically female Broly, as she’s U6’s Legendary Super Saiyan, able to get buff and go berserk. If that wasn’t bad enough, the two learn to fuse into Kefla, who can match Goku’s peak strength. So, they can be powerful allies, or dangerous threats.
7Aisha Clanclan
Outlaw Star
Outlaw Stargot beat out byCowboy Bebopback in the Toonami days. It wasn’t as deep or as introspective as its rival space western. But it did have one thing thatBebopdidn’t: aliens. TakeAisha Clanclan,for example. She’s a Ctarl-Ctarl, an alien race of cat-like shape-shifters. It suits Aisha, as she’s wily, devious, and has an ego. Originally, she was meant to find the Galactic Leyline on behalf of the Ctarl-Ctarl Empire.
But after Gene and co make her look bad in front of her higher-ups, she forces herself on his crew as compensation. She’s tougher than her tiny frame suggests, as she’s able to withstand point-blank gunfire and bathe in molten lava. That’s before shifting into her feral tiger-like form too. There’s more to her than brawn too, as she becomes a big sister figure to co-lead Jim Hawking. The others may be more reluctant to take her on, but Aisha proves her worth to the crew and for this list.
6Kagura
Gintama
Gintamatakes place in an alternate 19th century Japan where aliens known as the Amanto take over the country. The Bakufu is reduced to a puppet government, and society is left unequal between the humans and the aliens. Still, it sees the funny side of life, as samurai Gintoki sets up a freelance business where he’ll do anything for cash. Odd as it seems, it picks up when he gains an apprentice, Shinpachi, and an employee in the super strongKagura.
Born to the Yato Tribe, she had a sad upbringing, as her brother Kamui tried to kill their father Umibouzu, and Umibouzu left the family to avoid hurting them in his berserk rages. With the two of them gone and her sickly mother dead, she leaves to start a new life on Earth, where her naivety gets her in trouble her short temper usually solves. Her fiery attitude helps her hit back at anyone in her way, be it through verbal barbs or a hard strike. As such, she’s a double-edged sword at Gintoki’s business, as he’s just as liable to be hit as their foes.
5Haruko Haruhara
FLCL
If the lovey-dovey types aren’t someone’s cup of tea, the more antagonisticHaruko Haruharamay be more up their street. She makes an impression onFLCLprotagonist Naota by running him over with her Vespa. Even after she revives him, she beats him up, stalks him, and generally interferes with his life. She says it’s for the Galactic Space Police Brotherhood as she looks for the energy being Atomsk.
But then, she isn’t exactly the most honest figure around, as she places Naota (and Earth) in even more trouble each time she messes around. Not that those are within her Top 10 list of priorities. On paper, she sounds pretty evil. However, she carries off her deeds with such aplomb that she made the originalFLCLOVA a must-watch. There wouldn’t be a show if she wasn’t theremaking things weird. It would be all Fooly, no Cooly.
4Mihoshi
Tenchi Muyo
Tenchi Muyois full of alien girls, working with Tenchi himself or contending for his affections. Some caught on better than others, withMihoshibeing one of the more surprising favorites of old-school anime fans. She’s part of the Galaxy Police, and was one of its most capable officers until a tragic incident left her at death’s door. She was revived, but it left her as a bit of a ditz.
Clumsy, scatterbrained, and unable to stick to a single thought, she still manages to succeed due to her latent ability to affect causality. In other words, her goofs end up giving her good luck, and she still shows flashes of her old intelligence in her work. That said, she’s often regarded as a love-or-hate character, as her ditzy personality repelled some as strongly as it appealed to others. Nonetheless, even if she wasn’t aTenchifan’s favorite, she was one of the series' standout characters.
3Ryoko
Of all the different alien girls inTenchi Muyo,Ryokowas the first, and is often regarded as the best. Borne from the DNA of scientific genius Washu Hakubi, and an aquatic alien species called Masu, Ryoko grew up to be a feared space pirate. She was closed off in a cave on Earth but was inadvertently freed 700 years later by Tenchi, destroying his school and revealing his own half-alien heritage in the process.
The franchise may be based on a harem manga, though Ryoko stands out from the others in that she isn’t the typical dream girl. She’s brash, impulsive, short-tempered, and drinks sake like it was water. Yet she has a soft side for Tenchi, despite also intimidating him. Which makes sense as she is a space pirate with a long rap sheet and an interest in dealing out (and taking) pain. But just as Tenchi is not just an average boy, Ryoko isn’t just a plunder-happy tomboy. She got a heart of gold, which has earned her a legion of fans across the decades.
