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- Actor Allusion:
- Several cast members along with guest voice actors were part of Tengen Toppa Gurren Lagann 's main cast, so this factor has been played around for a little bit within the script.
- One that's worth mentioning is the Catch Phrase note of Tsumugu note , this line was originally Viral's note line when he first encountered Kamina.
- When Nui rips up Sanageyama's uniform, she calls him a "naked ape." Not only is this Just for Pun, but the fact that this was what Viral, who's a beastman, called human beings in general to disdain them. Now that his actor is playing a human being, this phrase was used back at him ironically.
- Toshihiko Seki as the demonic character reduced to being a physical upgrade to the lead character. With Butt Monkey moments thrown in!
- Nonon Jakuzure's original design would have made her further resemble Haruko Haruhara, whom Mayumi Shintani voiced.
- Several cast members along with guest voice actors were part of Tengen Toppa Gurren Lagann 's main cast, so this factor has been played around for a little bit within the script.
- The series has been considered a direct homage to the cult anime film Project A-ko. At the beginning of the series the main characters also have some similarity to the three female leads of A-Ko: a brash, impulsive, tomboyish girl (Ryuko / A-ko) is friends with a ditzy, hyperactive, childish classmate (Mako / C-ko) and is antagonized by a stern, snobbish and ultra-rich lady (Satsuki / B-ko) who is not afraid to don a skimpy bikini-shaped super-suit if this means better chances of success. Satsuki's Elite Four also resemble B-ko's followers, having a hulking brute, a megane and a petite girl among them.
- Similarly, Kill la Kill contains a lot of homages to the popular manga series from The '80s Sukeban Deka, both in characters, premise and design.
- The starting of the series echoes strongly the first volumes of Sukeban Deka: a delinquent girl heroine (Ryuko / Saki), armed with a revolutionary improbable weapon (a living school uniform / a yo-yo-weapon), comes to an important school ruled by a evil rich family (the Kiryuin Conglomerate / the Mizuchi family), and is introduced saving a plucky girl with a pauper family who becomes her friend (Mako / Junko). She also has to go through four cronies of the family's lead daughter (called the Elite Four in both series) who trash her in their first encounter, and is assisted by a secret agent with scruffy hair and aviator glasses (Mikisugi / Jin).
- The first ending is almost scene-to-scene identical to the ending of the 1985 Sukeban Deka live action series, as seen here◊.
- It is also needed to mention the 1987 movie adaptation Sukeban Deka The Movie film, in which another delinquent girl heroine had to take down a school ruled by a fascist cyborg headmaster who planned to conquer Japan. Ryuko's visual design, gauntled included, is a direct reference to the character, as you can see here.◊
- Most of the main characters including the Ryuko, Mako, Satsuki, Mikisugi and the student council can be considered to be expys of characters from Cutey Honey and Re: Cutey Honey. See here.
- Ryuko = Cutey Honey - Father killed by mysterious party. Seeks revenge using secret technology created by her father to transform into a scantily-clad warrior of justice.
- Mikisugi = Seiji Hayami - Mysterious man with a connection to the protagonist and her father. Helps her discover her powers.
- Mako = Honey Kisaragi - Genki Airhead that only desires friendship and food. Tends to get into risqué situations.
- Mataro = Junpei - Perverted younger brother that has a crush on the protagonist and acts as comic relief.
- Satsuki = Natsuko Aki - No nonsense woman who doesn't have time to deal with the protagonist's issues. Not really sure if she's a friend of foe?
- The Elite Four = Gold, Cobalt, Scarlet and Black Claw - 4 bosses leading up to the final boss.
- Ragyo = Sister Jill - the imposing female Big Bad.
- Mako's design is similar to that of Pinoko from Black Jack, complete with her famous "Ohmigewdness!" pose in episode 3.
- The last scene of the beginning credits features a gloved hand grasping air, with details that suggest it may be a shoutout to Asuka's famous "I'll kill you" scene. Which, given the staff and the context of the story, might not be too far off.
- The second ending pays homage to the first opening of Urusei Yatsura.
- The ending credits list Guts, the Mankanshokus' dog, as voiced by "?" note - Gainax already did this in FLCL where Miyu Miyu, Naota's cat, was credited as voiced by "?" (eventually revealed as Hideaki Anno).
- The decision to translate Shitennō as "Elite Four" is likely a reference to Pokémon. They even challenge Ryuko to a Boss Rush in episode 8, just like the Elite Four in the Pokemon games.
- Honnoji Academy has a tall tower overlooking the school grounds similar to Ohtori Academy.
- It also bears some resemblance to Arc Gurren Lagann.
- Honnoji City has a spiral highway going around it, Mako has a spiral watch, guess what other anime made by the creators also used spirals?
- Each one of the Elite Four's Goku Uniforms has a Shout Out to the most well known works the staff of Studio Gainax produced.
- Blade Regalia: FLCL - The giant robot/desperado/hand with a weapon on each finger.
- Shackle/Scourge Regalia: Panty & Stocking with Garterbelt - Garterbelt and Corset's bondage theme.
- Probe Regalia: Neon Genesis Evangelion - Asuka's Rebuild of Evangelion infamous Eva Test Plug Suit with a different color scheme.
- Symphony Regalia: Tengen Toppa Gurren Lagann - Over the top mecha and Dai-Gurren's crest on Nonon's shoulder. Also another reference to FLCL, given that it's a literal Instrument of Murder.
- The way the next episode previews cut to split-second frames of large white text on black is also used in Neon Genesis Evangelion.
- Satsuki's Kamui, Junketsu, bears some striking◊ similarities◊ to the eponymous Super Robot, of Gainax's Gunbuster.
- Senketsu, on the other hand, bears an uncanny resemblance to Mazinger Z◊.
- The X symbol on the soldier's "uniforms" of Nudist Beach is identical to the X symbol used by the X-Men, particularly the ones from the the X-Men cartoon from the 90's. Though here the X represents their hatred of clothing; their flag is a red X over a pair of underwear, whereas in X-Men it was a symbol for Charles Xavier.
- The nature and origin story of the Life Fibers bears a strong resemblance to that of the Getter Rays, which may have served as inspiration for Spiral Energy.
- Ira Gamagori reminds of Dozle Zabi.
- Ryuko makes the "I have met Excalibur" face◊ from Soul Eater at one point.
- The scene during Ryuko and Satsuki's transformations when their blood gets sucked uses an art style highly reminiscent of that of Panty & Stocking with Garterbelt's.
Episode 1: "If Only I Had Thorns Like a Thistle..."
- The episode's title is taken from Miyako Chaki's "Azami no gotoku toge areba" (YouTube).
- Satsuki's first lines (see Double Speak on the main page) are taken almost verbatim from Nineteen Eighty Four.
- Satsuki ends by referring to the other students as "pigs in human clothing," perhaps a reference to a certain novel also written by Orwell, that also deals with themes of totalitarianism, inequality, and literal pigs wearing human clothing.
- One of the students in Mako's and Ryuko's class can be seen playing with a Grey Hulk and Iron Man (Thorbuster) action figures and later of Hulk (Green) and The Destroyer, all of them characters from Marvel Comics.
- Ryuko's first scene where she walks across a bridge into town, gets harassed by neighborhood gangs, and beats them up thereby earning respect, is straight out of Ashita no Joe.
- Ryuko carrying her Scissor Blade in a guitar case and her search for revenge for the death of a loved one is an apparent shout-out to Robert Rodriguez's Desperado.
- Among the Professional Wrestling holds in which Mako puts Mataro to punish him for trying to mug Ryuko there is one of the Italian Stretches, used by retired wrestler Milano Collection A.T. from Toryumon. (If you are curious, it's the move in which she suspends him upside down over her shoulder while stretching his limbs. The other two moves showed on screen are a cross armbar and a single leg Boston crab, two very common finishers among New Japan Pro Wrestling rookie wrestlers.) She also uses a muscle buster on him.
- The scene where Ryuko lands onto the pile of cloths at the secret basement of her house bleeding, and then awakening Senketsu from below in search of the blood's owner, is practically identical to how Teppei met X in Masami Kurumada's B't X.
- Mako and Ryuko getting crucified (or pinned/hung) upside down is similar to how Mayumi Takahasi gets tied up in Kekko Kamen.
- The student's salute is copied one-to-one from the salute in the German film The Wave, adding to the vibe of totalitarianism or even fascism Honnoji Academy gives off.
- Some of Fukuroda's weapons he has on his gloves are drills.
Episode 2: "So Sexy, I'm Going to Faint"
- The episode's title is taken from Char's "Kizetsu suru hodo nayamashii" (YouTube).
- Isshin's letter to Mikisugi refers to the kamui as "just like dead leaves in the forest". Dead Leaves happens to be another anime that Hiroyuki Imaishi directed.
- Episode 2's tennis scenario is similar to Aim for the Ace!.
- Hakodate's speech about having only yourself to rely on on the court is parallels the opening narration of Aim for the Ace! as well.
- Hakodate's interchangeable visors swivel like a Scopedog's.
Episode 3: "Purity"
- The episode's title is taken from Saori Minami's "Junketsu" (YouTube).
- The choreography of Ryuko and Satsuki's fight in episode 3 where both are silhouetted in black on a white background is similar to Utena and Juri's fight in Adolescence of Utena.
- During one of Mako's speeches, she forms herself into the Ideon gauge.
Episode 4: "Dawn of a Miserable Morning"
- The episode's title is taken from Jun Mayuzumi's "Totemo fukō na asa ga kita" (YouTube).
- Ryuko's face after she was hit by pie made her look like No-Face from Spirited Away.
- The scene where the school bus is being pelted by an endless barrage of bullets is reminiscent of the action style of Imaishi's first directorial work, Dead Leaves.
- The scene in when the school bus hurtles through the air to the Blue Danube is a clear nod to 2001.
- The One-Star mom that calls in the hijacking is given the order to eliminate with extreme prejudice.
- The animation for the explosions are very similar to the ones in Panty & Stocking with Garterbelt.
- The scene where Mako moans "kaikan~" ("ecstasy") while manning the turret gun references the climatic machine gun scene from the 1981 movie version of Sailor Fuku To Kikanjuu.
- While Ryuko, Mako and Maiko are running across the bridge over the lava pit, one of the bones floating in it is a skeletal hand giving a thumbs up.
- Mataro riding a bicycle with Guts, a pug wearing a hoodie, in the basket and even "flies" for a short bit.
- When Mako's father is bringing Senketsu to Ryuko, he drives past◊ Vincent Vega and Jules Winnfield from Pulp Fiction.
- Maiko's entire first scene is an homage to Rei Ayanami . Red eyes? Arm in a sling? Saying she will press on while sad music plays overhead? Sounds awfully similar... Bonus points for the camera angle mirroring the iconic scene from the first episode of EVA where Shinji first sees Rei as she's lying in pain.
Episode 5: "Trigger"
- The episode's title is taken from Masanori Sera & Twist's "Hikigane" (YouTube).
- Tsumugu's "let me tell you two pieces of information" catchphrase echoes Viral's first lines to Kamina in episode 3 of Tengen Toppa Gurren Lagann.
- Creative Director Shigeto Koyama states that Tsumugu's outfit was directly inspired by Marvel's Agent Venom.
Episode 6: "Don't Toy with Me On a Whim"
- The episode's title is taken from the Southern All Stars' "Kibun shidai de semenaide" (YouTube).
- Sanageyama gaining more power by going blind is very much an homage to Daredevil and/or Zatoichi.
- Ryuko getting buried on the ground with only her legs sticking straight up is similar to how Unit-01 and Unit-02 get beaten up in one episode of Evangelion.
Episode 7: "A Loser I Can't Hate"
- The episode's title is taken from Kenji Sawada's "Nikumi kirenai rokudenashi" (YouTube).
- Ryuko shoves a bottle of Timotei Shampoo into Mataro's face when he catches him peeping on her.
- The dishwasher Sukuyo's holding seems to be modelled after a Famicom.
- The Two-Star uniform Club President Mako gets in episode 7 is a bancho outfit, complete with chewing straw and ripped up hat a la Otoko Ippiki Gaki Daisho and Dokaben. Commonly mistaken for a JoJo reference, it's a parody of series that did it at least 20 years earlier though virtually unknown outside Japan.
- Club president Jack Naito is basically Jacknife, and not just◊ In-Name-Only.
Episode 8: "I Will Wipe My Own Tears"
- The episode's title is taken from Katsuhiko Miki's "Ore no namida wa ore ga fuku" (YouTube).
- This◊ scene seems to be a shout out to the Cromartie High School opening theme, especially given KLK's director Imaishi also storyboarded the Cromartie opening.
- The Akio◊ Car makes an appearance. Not only is the car nearly identical, but the route they take is nearly identical to the one Akio drove around when making his speeches.
- Gamagoori's driving in episode 8 may be a Shout Out to the Panty & Stocking with Garterbelt episode "Death Race 2010", where the car ghost wiped out the Daten City police cars by spinning. How the Daten Police tried to subjugate the ghost by ramming into it is also replicated.
Episode 9: "A Once in a Lifetime Chance"
- The episode's title is taken from Hideki Saijo's "Chance wa ichido" (YouTube).
- The design of Gamagoori's Scourge Regalia bears a lot of similarities to Iron Man and War Machine, as well as Digimon Frontier 's Susanoomon.
- Given the high density of Marvel references in Goku Uniforms in later episodes, Senketsu Senjin's Wolverine Claws are likely a reference to the Wolverine.
Episode 10: "I Want to Know More About You"
- The episode's title is taken from Hiroko Yakushimaru's "Anata o motto shiritakute" (YouTube).
- Many references to Neon Genesis Evangelion:
- The scene were Inumuta hacked into Revocs Corporation is similar with Ritsuko Akagi tried to stop Ireul.
- Inumuta's Goku Uniform is reminiscent of an Eva Plug Suit.
- When Ryuko had Senketsu enlarge his eye, it looked a lot like a smaller Sahaquiel.
- Gamagoori holding a◊ white cloth with a framing very similar to the infamous End of Evangelion opening scene (Shinji masturbating to Asuka while she's unconscious).
- Inumuta's HUD looks very similar to the one in the Iron Man movies.
- Inumuta's smile after his hacking scene looks just like Light Yagami's smile in Death Note.
- Ryuko's outfit becoming skimpier in order to pull off a huge attack brings to mind Bayonetta.
- Take a close look at Nonon's transformed Goku uniform, specifically her left shoulder. On it is a VERY familiar-looking skull.
- Nonon's Symphony Regalia Grave and Senketsu Shippu look very similar to the Dendrobium and Dra-c
Episode 11: "I'm Not Your Cute Woman"
Episode 12: "Spit Your Sadness Away"
- The episode's title is taken from Naoki Hongo's "Kanashimi ni tsuba o kakero" (YouTube).
- Nui mentions that fixing Ryuko's monster form is useless, useless, useless, useless.
- She says "Useless,useless,useless,useless" again in Episode 21 while dodging close up machine gun bullets.
- The whole sequence with Ryuko's mutated, monster form shares semblance to both Unit 01's Berserk state and The Thing.
- But it most resembles William Birkin of Resident Evil 2 fame, especially his second stage.
- The transformation itself with Senketsu swallowing Ryuko with a huge toothy mouth resembles the way Naota is taken inside Canti in FLCL
- Berserk Ryuko bears strong resemblance to the Incredible Hulk in that she would never hurt Mako and the fact that Mako is the only one who can calm Ryuko down enough to reverse her transformation.
- There's also some resemblence with Cúchulainn's Warp Spasm in Celtic mythology, such as the fact that Berserk Ryuko is constantly spewing fountains of blood.
- The seven scars on Ragyo Kiryuin's back are a reference to Kenshiro's seven scars.
- Mako says, "People die when they're killed by blood loss!"
Episode 13: "Crazy for You"
- The episode's title comes from Toshihiko Tahara's "Kimi ni barabara...to iu kanji" (YouTube).
- The whole passage in REVOCS HQ is one big reference to Neon Genesis Evangelion:
- The city where REVOCS HQ is situated has the company logo, a blood red logo with the name of the company in capitalized letters, on the facade of every tower, like NERV's leaf was on all of Tokyo-3's buildings.
- Then the camera shows the "cone-shaped" base of REVOCS building at an angle that make it looks like a pyramid, reminiscent of NERV's HQ pyramid.
- Ragyo's speech mentions mankind's original sin and the Fruit of Knowledge, two themes often presents in Gendo's dialogs.
- Ragyo's personnal office is basically a circular version of Gendo's famous office, with the complete lack of furniture except a lone desk, strange marking on the ground and ceiling and windows circling the entire office providing the only source of light.
- REVOCS itself, a sinister multinational god-building think tank answerable to apparently no one, is actually a mere front for COVERS...an even more sinister multinational god-building think tank answerable to apparently no one, exactly like NERV was a front for SEELE.
- During her speech, Ragyo poses in a way very similar to Frieza.
- Mako's brother and dad running in circles until they turn into butter is a reference to Little Black Sambo.
- The pose Nui makes◊ when she takes off her disguise is a dead ringer for the pose Panty Anarchy makes◊ when she and Stocking transform.
- Nui's ability to create and operate human-like puppets with strings of Life Fiber reminds of Leonof the Puppetmaster from Trigun, who similarly created extremely lifelike puppets and moved them with strings.
- Senketsu's apparent Death By A Thousand Cuts may remind some of the ending of Panty & Stocking with Garterbelt.
Episode 14: "Ride Like the Wind"
- The episode's title comes from Takao Hirata & Cellsters' "Isoge Kaze no you ni" (YouTube).
- The big tusked turtle guardian brings to mind a certain other guardian turtle.
- A villainous force invades Osaka militarily. The citizens of Osaka harness their community power and keep the bad guys at the gate. That is one of the battles in Burst Angel.
- Inumuta appeared as a very Star Wars-like blue hologram.
- Mako channels the Hundred Crack Fist of the North Star to catch all that money being shot at her, complete with "ATATATATATATATAT!"
Episode 15: "Don't Stop Me Now"
- The episode's title comes from Linda Yamamoto's "Dō ni mo Tomaranai" (YouTube).
- In the Aniplex sub Takarada says that he's not going to write a check his body can't cash.
- The new version of Shackle Regalia continues the Iron Man trend, this time resembling◊ the Hulkbuster Armor.◊
- The new version of Blade Regalia looks somewhat similar to Elemental Hero Neos from Yu-Gi-Oh! GX, which was in turn based on Ultraman designs.
- Ryuko squirting blood into Satsuki's eyes is reminiscent of what DIO did in his battle against Jotaro.
- Jakuzure's new uniform bears a strong resemblance to the Powered Armor from the Infinite Stratos series. Her hat also brings to mind Galactus' helmet, with its upward pointing, angled side-horns.
- Boota can be seen in a freeze-frame◊ when Takarada's Dotonbori Robo bursts from the ground.
Episode 16: "The Girl Can't Help It"
- The episode's title comes from Reiko Ōshida's "Onna wa sore o gaman dekinai" (YouTube), and from the film The Girl Can't Help It (which shares its Japanese title with the name of the song).
- During one of the early scenes with the Dotonbori River in the background, there's a statue of Colonel Sanders neck-deep in the river, referring to the infamous Curse of the Colonel.
- When Mikisugi explains that Life Fibers are aliens, Mako wonders whether he means xenomorphs. In addition, she also visually alludes to a famous alien hoax picture◊.
- As Mikisugi is making his lecture, at one point he is seen posing in various historical outfits - including some made famous by 1980s Michael Jackson, Aladdin Sane-era David Bowie, Madonna, and Sid Vicious.
Episode 17: "Why Are You...?"
- The episode's title comes from Kitaōji Kin'ya's "Naze ni omae wa".
- When Nudist Beach and Ryuko go to stop the Culture Festival, Mako says "Have fun storming the stadium!"
- Ragyo quotes Macbeth to summarise Nui's mentality: "Fair is foul and foul is fair".
- Satsuki betrays and rebels against Ragyo at Honnouji Academy in this episode. In Japanese history, Akechi Mitsuhide betrayed and rebelled against Oda Nobunaga at Honnouji.
- Ragyou in her new attire in this episode looks like the witch Walpurgisnacht from Puella Magi Madoka Magica not upside-down.
Episode 18: "Into the Night"
- The episode's title comes from Naomi Chiami's "Yoru e isogu hito" (YouTube).
Episode 19: "Raindrops Keep Falling On My Head"
- * The episode's title comes from The Mops' "Tadori tsuitara itsumo ame furi" (YouTube). The English episode title refers to the BJ Thomas song of the same name.
- The arrival of COVERS in Honnouji is visually very similar to the Impact vortexes from Rebuild of Evangelion.
- Three of the Nudist Beach members in one scene strongly resemble Korra, Mako, and Bolin.
- Sanageyama's uniform's death scene is very reminiscent of Viral's Enkidudu's death scene, down to the remark where the weapons reach their limit.
- When Ryuko wakes up from her coma and explodes out of a bunker to confront an assembled army of COVERS, she's got a billowing sheet draped around her like a cloak, visually reminiscent of Tetsuo's iconic red cape in AKIRA.
Episode 20: "Far from the Madding Crowd"
- The episode's title comes from Tomoko Ohta's "Tōku gunshū wo hanarete". The English episode title refers to the Thomas Hardy novel of the same name.
- The motorcycle shop Ryuko got her badass bike from is called Inferno.
- Sanageyama's "The enemy awaits at Honnouji!" is a reference to the famous line Akechi Mitsuhide supposedly said when he betrayed Oda Nobunaga.
- The Nudist Beach flagship strongly resembles the Dai Gurren from Tengen Toppa Gurren Lagann
- This may not be a fully intentional one and more of a coincidence, but Satsuki's escape and fighting COVERS with her feet brings to mind the naked Raiden gameplay segment of Metal Gear Solid 2: Sons of Liberty.
- The scene where Gamagoori jumps from a helicopter and lands in front of Satsuki is based on a scene from FLCL where Naota and Lord Canti jump down and land in front of Mamimi.
Episode 21: "Incomplete"
- The episode's title comes from Hiromi Gou's "Mikansei" (YouTube).
- At the end, when Ryuko rips her way out of Junketsu, after a brief trip inside her mind, we are treated to some shots that look suspiciously similar to Episode 16 of Neon Genesis Evangelion, after Unit 01 bursts out of Leliel and stands soaked in a rain of blood.
Episode 22: "Tell Me How You Feel"
- The episode's title comes from Machiko Watanabe's "Kuchibiru yo, atsuku kimi wo katare" (YouTube)
- Upon Senketsu reuniting with Ryuko, the way Ryuko puts on Senketsu looked like a Transformation Sequence out of the Super Robot Genre.
- In yet another American comic costuming reference, Iori's Goku Uniform features robot tentacles, evoking the appearance of Doctor Octopus, combined with the colors and All-Encompassing Mantle of Spawn.
- Ragyo's plan involves turning all of humanity into a Hive Mind through use of a powerful extraterrestrial organism. Sound familiar?
- The giant sized COVERS that attacks the Naked Sun is made to look like it has shades both on its "head" and its chest, just like a certain mecha from a show by the same creators.
- The dark shot of Senketsu's stripes glowing red with blood is likely a reference to Kamen Rider Faiz. The titular Rider's suit had glowing red strips of Photon Blood powering it, becoming dramatically visible in the dark.
- Gamagoori carries Human Extraction Devices in the same weapons arrangement and hunched over pose of a Destroid Monster.
- Ryuko cutting off Nui's arms by rapidly flailing the Scissor Blades around is similar to Stocking slicing Panty into 666 pieces in Panty & Stocking with Garterbelt.
Episode 23: "Imitation Gold"
- The episode's title comes from Momoe Yamaguchi's "Imitation Gold".
- There seem to be several nods to Tengen Toppa Gurren Lagann in this one:
- Sanagayama's transformation into his Final Goku Uniform is basically TTGL's transformation in reverse, his earlier, larger armor breaking away to reveal his later, smaller armor.
- The Elite Four's Asskicking Pose after their transformation is shot almost identically to a scene from the third opening (GL and two Grapearls in a Back-to-Back Badasses pose surrounded by enemies).
- The Naked Dagger's attack on the Primordial Life Fiber is pretty much the same as the Dai-Gurren's attack on Teppelin, though in this case, it goes all the way through.
- And after that, when Ragyo is going This Cannot Be!, we get Ryuko, Satsuki, Mako and the Elite Four assembled in the same Asskicking Pose from the final episode (with Ryuko carrying Mako in much the same way Simon was carrying Nia) complete with Ryuko giving a Badass Boast not too different from Team Dai-Gurren's motto.
- Sanagayama's Final Goku Uniform makes him look quite a bit like Jetstream Sam.
- Inumuta's Final Goku Uniform has him sporting the same distinctive red, rhomboid, bridgeless sunglasses worn by Turn A Gundam Char Clone, Harry Ord mixed with the looks of a Kamen Rider. The suit's powers and overall emphasis on lithe acrobatics also makes it a reference to Spider-Man.
- During Inumuta's transformation he emerges from a computer bearing a striking resemblance to a SGI Challenge XL, including a Silicon Graphics logo with Inumuta Graphics written next to it. During the development of Neon Genesis Evangelion SGI workstations such as the Challenge XL were used for CG scenes.
- Gamagoori's Final Goku Uniform resembles a combination of Colossus and Apocalypse from the X-Men with War Machine's faceplate as shoulder pads.
- The bold text "In Heaven's Name, We Smite Clothing!" is a parody of divine wrath-themed In the Name of the Moon speeches used in various Jidai Geki and anime like Might Gaine. Clothing rhymes with evil in Japanese.
- Mako's power levels while wearing her Two Star Fight Club Uniform are - baring intelligence - well over 9000.
- Ragyo proclaims that "Resistance is futile!" when fighting Satsuki.
- Nui's HUGE head looming over the characters is a nod to Lilith's rise in The End Of Evangelion.
- At one point while Ryuko and Satsuki are fighting Ragyo in the air, they attack her with a move that has a big resemblance to the Spindash.
Episode 24: "Past the Infinite Darkness"
- The episode's title comes from Ichirō Araki's "Hateshinaki yami no kanata ni" (YouTube), also the ending theme of the second Ashita no Joe TV series.
- There's a few blatant Gurren Lagann and references, to make the final episode even more epic:
- The episode's name may be a reference to the speech Simon makes when Super Galaxy Gurren Lagann is created, citing that the late Kittan's hopes and dreams has turned the infinite darkness into light. While it's probably unintentional, it should be noted that Senketsu gains a Golden Super Mode in this episode.
- Senketsu transforms on its own, without Ryuko, and drills a hole through Ragyo. The scene looks like Lordgenome's defeat by chest-drilling.
- Gamagoori's ultimate Regalia turns him into what can be described as a "human Gunmen", looking much like the Gurren Lagann. He attacks using multiple projections of his own chest-face.
- The attack Ragyo uses on Ryuko looks like Lazengann's drills.
- Finally, during the end credits sequence Mako's backpack resembles the head of those "grape-hippo" creatures that appeared in the early episodes of the series.
- Some similarities to Neon Genesis Evangelion have been noted as well.
- Much like Sahaquiel impaling EVA-01's hands in Rebuild of Evangelion, Ragyo gets the palms of her hands impaled by Satsuki's Gako and Koryu blades, only to break them instead.
- The Prime Life Fiber, which was thought to have been killed, tangs itself and flows up to the school before reforming.
- Gamagoori's attack on the transmitter's shield has a shot of his hands ripping it open that is identical to the shot of EVA-01's hands ripping open Sachiel's A.T. Field.
- Nui's assimilation into the Primordial Life Fiber was similar to Rei's assimilation into Lilith whilst implementing Instrumentality, complete this time with a giant Nui-head growing out from the fibres.
- The Sword-Scissors, in their final form, look uncannily similar to the Lance of Longinus.
- The freeze-frame from when, in Ryuko' and Ragyo's fight, the first time Ragyo grows spikes and impales Ryuko is strikingly similar to the one of Asuka's death in End of Evangelion.
- Ragyo growing glowing wings and shooting out rays of light which cause everybody to cower in fear is strongly reminiscent of Arael's Trauma Beam.
- An overly passive half-alien woman named Rei getting absorbed into a white giant in order to complete a generations-old plan to turn humanity into orange stuff.
- Tsumugu and Aikuro's combined DTR looks a lot like Chouryuujin from GaoGaiGar.
- Inumuta's Regalia referencing Spider-Man becomes even more obvious in this episode, with him doing Spidey's gestures and substituting computer cables for webbing.
- At one point various world cities are shown. In the New York sequence, a billboard advertising the Lion King musical and the insignia of the Weyland Corporation appear.
- Ryuko impales herself on Ragyo's arm in a direct reference to GunBuster; the act, poses, and perspective are all identical. Compare this (around 2:00) to this (around 2:40).
- Senketsu Kisaragi is very clearly a homage to the ever-classic Dragon Ball Z, from the basic physical details up to and including "I grow stronger when I'm on the verge of death!"
- The shot of Ryuko facing a naked Ragyo in space, with Earth orbit as background is visually reminiscent of the final part of Goku and Beerus' fight in Dragon Ball Z: Battle of Gods (can be seen here at about 12:00).
- The name is also a direct reference to Cutey Honey, specifically Cutie Honey's civilian identity Honey Kisaragi. Given that many of the people that formed Studio Trigger worked on Re: Cutey Honey at Studio Gainax, it's a nice nod to their previous work (and far from the only one).
- The death of Senketsu book ended in the exact same fashion as the original manga ending of B't Xnote , where X dies by using all of his protection system on Teppei and his brother Kotaro, sending them back to Earth as he disintegrates.
- The final battle has also been noted to be strikingly similar to the climax of Sonic Adventure 2, complete with a Super Form involving the use of multiple elements, the battle taking place in space around an orbiting satellite, and one of the heroes sacrificing themselves and dying while falling back to earth. It would make sense considering the comparisons people made with Ryuko and Shadow.
- Also, some people may be reminded of the ending to Kamen Rider OOO, where it also had the sidekick dying while the hero falls into their cast of allies.
- At one point, Ragyo gets a horned "headdress" that makes her look just like a white version of Maleficent.
- Shinra-Koketsu looks similar to Izanami. May also be an Actor Allusion as Romi Park voiced that character.
- Ragyo's defiant suicide by pulling her own heart out, holding it up then crushing it sure resembles a villainesque take on Musashi's iconic heroic sacrifice in Getter Robo.
- During Mako's spotlight speech, when talking about how Ryuko can create a perfect world, she turns into the "It's A Small World After All" ride from the Disney Theme Parks.
- When Ragyo gets cut into four separate pieces by Ryuko and Satsuki the situation looks very similar to how Dio Brando of Jojos Bizarre Adventure got bisected during his fight with Jonathan. It is also similarly ineffective and doesn't impair Ragyo's ability to talk.
- Ragyo attempting to cut Ryuko into shreds brings to mind a certain scene from Panty & Stocking with Garterbelt.
Episode 25: "Goodbye Again"
- The episode's title comes from Kiyohiko Ozaki's 1971 song, "Sayonara (wo) mou ichido" (YouTube).
- The controls for the Final Defense Apparatus are identical to a Gunmen, and its eyes and arms closely resemble the Dai-Gurren. Furthermore, the way Ryuko attempts to climb it using one of Satsuki's short swords is a clear refernce to Simon climbing Shuzack with his hand drill.
- When Senketsu sends the Scissor Blades back to Ryuuko, Inumuta reports "an object coming down from the stratosphere at extreme speed", similar to the line said by a JSSDF soldier when the Lance of Longinus comes to Shinji's aid in End of Evangelion.
Drama CD 1: "I Really, Truly Appreciate Your Work"
- The first drama CD's title comes from The Drifters' 1970 song, "Honto ni Honto ni Gokurōsan" (YouTube).
Drama CD 2: "Between the Night and the Morning"
- The second drama CD's title comes from Shinnosuke "Peter" Ikehata's 1969 debut single, "Yoru to Asa no Aida ni" (YouTube).