Characters: Shinryaku! Ika Musume

These are the characters from Shinryaku! Ika Musume and tropes that are associated with them.

This page is currently under construction. Any contributions are appreciated.

Ika Musume/Squid Girl

Voiced by: Hisako Kanemoto (Japanese) and Christine Marie Cabanos (English)

The "protagonist" of the series, an anthropomorphic squid-girl who comes ashore to invade the surface world in retaliation for constant human pollution of the seas, only to end up being forced to work as a waitress at the Lemon Beach House restaurant in order to pay for a damaged wall of the restaurant.
  • Alien Hair
  • Anti-Villain: Technically a Well-Intentioned Extremist (Type III), but her traits are more akin to a Villain In Name Only (Type IV).
  • Applied Phlebotinum: In Season 2 episode 2.3 it turns out that Ika Musume can pick up heavy weights with her tentacles because she can manipulate her weight using her bracelets.
    • Required Secondary Powers: It's eventually explained that the whole reason Squid Girl can pick up people and other heavy objects with her tentacles without losing her balance is that she can alter her weight with her bracelets, becoming heavy enough to anchor herself.
  • Between My Legs: The shot used when she's introduced. The same introduction shot is used in the first and last episodes of both seasons. She also gets this shot in episodes 3 and 7.
  • Brilliant but Lazy: She's shown to be extremely good at math, has mastered several skills that have nothing to do with world domination, and of course there's her extremely powerful tentacles. She could at least be a serious threat, if she wasn't so lazy and easily distracted (and of course, if it weren't for Chizuru.)
  • Card-Carrying Villain
  • Cold Turkeys Are Everywhere: After she swears off shrimp. They pop up everywhere.
  • Combat Tentacles: They are absurdly strong, faster than sound, can reach ludicrous lengths but are also precise to put a string into a needle. And they can regenerate just as fast.
  • Comically Missing the Point
  • Cry Cute: Every time Chizuru intimidates her into obeying her, or whenever a "comrade" of hers (e.g. Takeru in a squid paper-hat and an umbrella) "dies" (Takeru's hat blown away, the umbrella ran over by a truck).
  • Curtains Match the Window: And the tentacles.
  • Cute Clumsy Girl: Without the use of her tentacles she can barely kick a soccer ball.
  • Cute Squid Girl
  • Dark and Troubled Past: Occassionally hinted at. It seems life in the ocean wasn't all that great for her. When Eiko mentions how Ika isn't picky at eating, she responds by saying in the ocean you can't afford to be picky, just being able to eat at all is reason to be happy. She later tells Takeru she had never had the opportunity to play with others until she came to the surface. She seems oddly depressed when these subjects are brought up.
  • Even the Girls Want Her: Ika is, in an appropriate and friendly way, friends with many kids of either gender, specifically Takeru and Kiyomi's respective groups of friends. Sanae and Cindy, on the other hand...
    • In season 2 episode 9.1, Ika is asked by Risa to join her play as her husband. Minutes later, Eiko, Sanae, and Kiyomi all join in. They have different roles but they share one similar thing: they LOVE Ika Musume. They even take their roles seriously and act as though they are genuinely in love with her.
  • Face Your Fears: In Season 2, Episode 11.3, she overcomes her fear of Chizuru, accidentally ticks her off again, and gets dragged by her to a room while showing NO signs of fear.
    Ika: Oh? About what? (while being dragged by Chizuru to a room)
  • Genius Ditz/Small Name, Big Ego: At her best, she is the former. At her worst, she is the latter.
  • Genki Girl
  • Godiva Hair: Ika has this when she's in the bath.
  • Heel-Face Turn: Not completely so, but it does happen as the series progresses.
  • Humans Are the Real Monsters: Her reason for invading the surface world. Her subsequent experiences, however, apparently start to impress to her that the situation is more like "Humans Are Flawed".
  • Hurricane of Puns: The dub version makes many puns related to undersea creatures.
  • I Call It Squid Unit 1, Hyperion and Eyjafjallajökull: Her umbrella.
  • Iconic Outfit: Her cute white sundress with blue bracelets and matching shoes. So much so, that they have the ability to repair itself.
  • Ineffectual Sympathetic Villain: Ika Musume has Combat Tentacles and a strong desire to conquer the human race. She has a bit of trouble getting to the conquering part however.
  • Laser-Guided Amnesia: In Season 2, Episode 7.2.
  • Light 'em Up: Like certain types of squid, she can emit light from her body.
  • Modern Major General:
    Ika: "Why am I good at everything but invading?"
  • Multi-Armed Multitasking:
  • Mundane Object Amazement: Given her little knowledge of the human world, this naturally comes in.
  • Mundane Utility: Her Prehensile Hair is frequently used like an extra set of hands for carrying food.
    • In fact, this is why she's given the job at the restaurant. Her delicious ink also helps.
  • Never Bareheaded: And for a very good reason: it's mentioned that her "hat" is actually her life source. If it's removed, she dies. Luckily, removing it is pretty hard since it's fused to her scalp. Since she's a squid, it may actually be her scalp (it certainly looks like the top of a squid's head). She also provides the image for the trope page.
  • Nice Hat: It's more than just a Nice Hat, she needs it to live.
  • No Social Skills
    Ika: "What's a military?"
  • Offhand Backhand: To Sanae, every time she tries to glomp her.
  • Parasol of Pain: In her imagination at least.
  • Prehensile Hair: While not actually hair, Ika Musume has highly prehensile tentacles growing out of her head, which look quite a bit like hair.
  • Red Eyes, Take Warning: She does this in the anime when she gets angry and unleashes her full power. Watch a brief example here.
  • Sick Episode: Ika falls ill to a Squid Girl disease. Symptoms include nausea, headaches, flushes in the face, fever, delirium, and cravings for shrimp.
    • Again in Season 2 episode 8.3. Unlike in the first season, she appears to have a normal fever which she gets from Kiyomi.
  • Sitcom Archnemesis: Sometimes sees Goro as one.
  • Squid Girl in White
  • Squid Out of the Ocean
  • Take Over the World: Her ultimate goal. Too bad she has no idea as to the strength of all the world's military forces.
  • Tentacle Rope: In one instance, Ika does this to Eiko when she wanders into Eiko's room and falls asleep there... Rather, her tentacles did this all on their own. Ika herself was already long asleep.
    • Ika also does this as a self defense mechanism against Sanae and Cindy.
  • Trademark Favorite Food: Shrimp. She has a separate stomach for it.
  • Tsundere
  • Unusually Uninteresting Sight: No one save Nagisa ever takes notice of her strange appearance and Prehensile Hair.
  • Unwanted Harem: Eiko and Isozaki come to realize this. Maybe not a true harem, but definitely unwanted.
  • Verbal Tic: -de geso~. The English version of the anime translates this into frequent ocean life puns, apparently as an Ascended Meme from the fansubs.
  • Villain Protagonist: Ika wants to take over the world because humans have been polluting the seas.
  • Vitriolic Best Friends: With Eiko. They bicker a lot, but sure do spend a lot of time together as well, and Ika plays Eiko's video games a lot as well.
  • Why Did It Have To Be Chizuru, Orcas and Sharks?
    • After the end of Season 2, Episode 11.3, it looks like Ika is not afraid of Chizuru anymore, even if she accidentally ticks her off again and gets dragged by her to a room.
  • Work Off the Debt: Her "Punishment" for blasting a hole in the Lemon Beach House's wall.
  • You Gotta Have Sky-Blue Tentacles

Eiko Aizawa

Voiced by: Ayumi Fujimura (Japanese) and Heather Pennington (English)

Middle of the Aizawa siblings and manager of the Lemon Beach House, as well as Ika Musume's principal "handler".
  • Bodyguard Babe: She's like this towards Ayumi when she sees some Casanova Wannabes try to flirt her. She almost breaks one of those guys' arms off. Here's a quote from the same guy:
    "Pain in the ass bodyguard!"
  • Book Dumb: Studying isn't her forte, but she's also too proud to ask Ika for help.
  • Cool Big Sis: For Ika, some of the time.
  • Deadpan Snarker: To Ika.
  • Fiery Redhead
  • Gamer Chick: Keeps a Famicom lookalike inside her room (in the anime it's a Mega Drive lookalike). Oftentimes Ika is her playmate.
    • Also, in the OVA when The Three Stooges ask Eiko and Ika to try out their new handheld, Eiko says this:
    Eiko: "Gaming is my life!"
  • Jerk with a Heart of Gold: She's not a jerk per se, but given Ika's behavior, can we really blame her for sometimes being abrasive towards her?
  • Only Sane Man: Narrative-wise. She's also the person Ika interacts with the most.
  • Red Oni, Blue Oni: Red to Chizuru's blue.
  • Sailor Fuku: Her high-school uniform.
  • Vitriolic Best Friends: With Ika/Squid Girl. Despite the arguments they get in, they spend a lot of time together.

Chizuru Aizawa

Voiced by: Rie Tanaka (Japanese) and Shelby Lindley (English)

Eldest of the Aizawa siblings.

Takeru Aizawa

Voiced by: Miki Ootani (Japanese) and Amanda C. Miller (English)

Youngest of the Aizawa siblings.
  • Anime Hair
  • Crossdressing Voice: If you look at his seiyuu's name above, then yes.
  • The Generic Guy: Lampshaded when Squid Girl tries to draw the Aizawas using her tentacles (which she explains goes by her mental images of them.) Chizuru gets drawn as an oni, Eiko as a killer robot, and a more photorealistic version of himself.
  • Made of Iron: His very first appearance has him getting thrown around and slammed into the ground by Squid Girl's tentacles, only to get right back up and proclaim "That was so cool!"
  • Not So Above It All: Despite treating Ika like a playmate most of the time, Eiko notices that he's slowly learning to subconsciously control Ika — which is easy enough, given her immense gullibility.
  • Out of Focus: In Season 2 Episode 10.1, Ika, Eiko, and Chizuru all forget about him while they try to eat as many cuts of meat as they can. Luckily, Chizuru has reserved some cuts (which she intends to eat herself) for him.

Goro Arashiyama

Voiced by: Yuuichi Nakamura (Japanese) and Jason Wishnov (English)

A lifeguard and Eiko's childhood friend, who has his sights for Chizuru.

Sanae Nagatsuki

Voiced by: Kanae Itō (Japanese) and Xanthe Huynh (English)

Eiko's neighborhood friend who has taken an obsessive liking to Ika.

Cindy Campbell

Voiced by: Hitomi Nabatame (Japanese) and Laura Post (English)

An American alien researcher who comes to Japan to investigate Ika.

Nagisa Saito

Voiced by: Azusa Kataoka (Now Azusa Enoki) (Japanese) and Cristina Valenzuela (English)

A surfer and part-time worker for Lemon Beach House, and perhaps the only person who sees Ika as a genuine threat to humanity.

Ayumi Tokita

Voiced by: Ayako Kawasumi (Japanese) and Sarah Williams (English)

Daughter of the manager of Southern Winds, Lemon Beach House's rival restaurant from a neighboring town. She sometimes works part-time at the Lemon Beach House.
  • Antenna Hair
  • Beautiful All Along: Without those creepy "Fake Ika Musume" kigurumi masks her father has her wear.
  • Beware the Nice Ones: After episode 10.2, you better show some manners while talking to her, as her father finds out after she throws him down. Though that one is an accident. She learns self-defense from Chizuru. Yes, that CHIZURU!
  • Bodyguard Crush: While very subtle, it's implied that she may be this for Eiko as she tends to be very shy and bashful towards her.
  • Defrosting Ice Queen: Her father tells Eiko, Chizuru, and Ika that ever since she started working with them, her sociability has been improved. She's still afraid of men though.
  • Dude Magnet
  • The Faceless: Not exactly with her appearance (she's even actually quite the looker), but she's this personality-wise; as her father told Eiko, she cannot actively interact with people outside her masks.
  • Mad Scientist's Beautiful Daughter
  • Meido: In Chapter 162 (Season 2, Episode 2.2 in the anime), she is this while working at the store and while wearing bladed brass knuckles! Needless to say, male customers are petrified at the unusual sight.
  • Not Good with People: Chapter 210 reveals she can speak normally with Ika, because she doesn't consider her human.
    • And again in chapter 212 to CHIZURU.
    • Another in her list is Sanae in chapter 216.
  • The Quiet One
  • Shrinking Violet
  • Speaks Fluent Animal: Can understand animals like Alex, or at least claims she can. The others hope it's true.

Mr. Tokita

Voiced by: Rikiya Koyama (Japanese) and Tony Oliver (English)

Ayumi's father whose first name is unknown. He is the Southern Wind's owner. He is fond of making creepy kigurumi based on Ika.

Harris, Clark and Martin

Voiced by: Seiji Sasaki, Anri Katsu, and Tetsuo Goto (Japanese), and Phineas, Tony Oliver, Jonathan Meza (English)

A trio of American Mad Scientists and MIT graduates who, together with Cindy, investigate Ika.
  • Eagleland
  • Geek Physiques: Harris is a little skinny, Clark is very skinny, and Martin is fat.
    • When Ika is gone in episode 12.1, they become depressed — Harris and Clark gain a ton of weight, while Martin loses quite a bit.
  • Gratuitous English: Humorously, a few of their Gratuitous English lines go unaltered in the English dub. "You're a god, man! We are god men!"
  • Mad Scientist
  • Reed Richards Is Useless: In their zeal to discover Ika's "alien" heritage, they conveniently overlook their other, far more important discoveries: a universal language translator and a cure for cancer. Being that we actually learn this from them, they appear to have some faint awareness of the fact that they're squandering their talents and discoveries
    • Probably they finance their wild-alien chase with the patent-money they get from these inventions?
  • Three Stooges Shout-Out: their In-Series Nickname
  • Villain Team-Up: While they are not really villainous, the trio and Ayumi's father join forces in Season 2, Episode 11.2 to build a Mecha-Ika Musume. This Mecha-Ika has almost all of the original's powers as well as the ability to speak.

Kiyomi Sakura

Voiced by: Kokoro Kikuchi (Japanese) and Carrie Savage (English)

A middle-school student who Ika befriends after a prank gone wrong.

Tatsuo Isozaki

Voiced by: Shinzou Miyasaka

Goro's friend and fellow lifeguard who tries to flirt with Ayumi.

Kozue Tanabe

Voiced by: Akemi Kanda (Japanese) and Erika Harlacher (English)

A gentle girl implied to be an anthropomorphic "tako musume" (octopus girl).

Alternative Title(s):

Squid Girl