Episode 19 features a scene where Sanageyama faces flying enemies with a damaged Goku uniform, pleading for it to "hold on just a bit longer", in a similar matter to when Viral faced flying enemies with his damaged Gunmen. Additionally, the two scenes featured a near identical shot from above.
Yukari Tamura is also a voice actor of Bernkastel, who has a reputation as a troll.
Nonon Jakuzure: As shown in her original concept, she would be a punk rocker wielding an electric guitar and would use guitar rifts, and coupled with the pink hair and personality, she sounds a lot like Haruko Haruhara.
Anime First: The series was originally going to be a manga with straight-up action and little else. Now it's a more character-focused anime (though there's still plenty of ass-kicking, and a manga adaptation to go with it).
Author Avatar: The DVD special documentary revealed that a few Trigger staff members made themselves appear as students within the Honnouji Academy.
Blooper: In Episode 16 Ryuko is seen reverse sitting on a chair, her legs through the holes under the arm-supports. Then she violently stands up, grabbing said chair and lifting it above her head. However, there is no scene of her pulling her legs out from under the arm supports. It's pretty much like they phased through her legs when she was standing up. Can be seen here and here.
The designs and, to an extent, the personalities of the main protagonist and antagonist are reminiscent of Tengen Toppa Gurren Lagann characters Simon and Rossiu, respectively. The entire show could even be considered as TTGL's Spiritual Successor.
Gamagoori is more or less a teenage, subservient Raoh (with a character design closer to Souther, though) and a reincarnated Hentai Kamen.
Tsumugu is Yoko genderbent. He's got a shock of red hair and excellent sniper skills, and he's extremely attractive, especially in his revealing battle uniform. Yoko could also be his mother, with Kittan as his father.
Senketsu and Isshin Matoi seem like expies of Mazinger Z and Dr. Juzo Kabuto. Isshin created a super powerful uniform then was killed by the antagonist which propelled Ryuko into her Roaring Rampage of Revenge. She also uses her father's creation to exact her revenge similarly to Kouji Kabuto.
Ryuko's situation is also similar to that of another Go Nagai creation, Cutey Honey. Honey, like Ryuko, is also out for revenge after her father was killed. Said father was also responsible in some way for her powers. Both also wear highly Stripperiffic outfits in battle.
Ryuko's situation and personality also bares a striking resemblance to that of Ragna The Bloodedge. Both of them are mean, but good-natured loners who wield really large swords that can transform into an even bigger sword. They're primarily motivated by revenge for the death of a loved one and go against an established government to do so, and end in up a conflict with a Katana user Who later is revealed to be their sibling. Bonus points for the actual culprits of their messed up lives being revealed later, and taunt them over their weakness which massively pisses them off. The Big Bad of each respective series is also revealed to be a relative of theirs as well, who is also under the control of an otherworldly menace.note The main difference here is, unlike what happened so far in Blaz Blue Chrono PhantasmaBoth Ragyo and Nui worked and died together at the end compared with what happened with Terumi (Nui's counterpart), who was betrayed by Izanami (Ragyo's counterpart) and killed by Hakumen at the end.
Ryuko's situation also bares a striking resemblance to that of Scorpion. Both of them use otherwordly powers. They're primarily motivated by revenge for the death of a loved one and go against an established government to do so, and end up in a conflict with a member of the organization who later is revealed not to be one responsible for the death of their loved one. note The main difference here is, unlike what happened so far in Mortal Kombat 9, Ryuko does not kill Satsuki compared with what happened with Sub-Zero/Bi-Han (Satsuki's counterpart), who was killed by Scorpion (Ryuko's counterpart) after the latter was manipulated by Quan Chi (Nui's counterpart). Bonus points for the actual culprits of their messed up lives being revealed later, and taunt them over their weakness which massively pisses them off. The actual culprit of each respective series is also revealed to be working with the Bigger Bad who seeks to conquer and rule the world in their image.
Character design-wise, Ryuko looks a helluva lot like Seija Kijin, enough for many Japanese fan-artists to create lots of crossover art featuring both Ryuko and Seija switching clothes and/or situations. In less degree, many artists love to depict Mako as Shinmyomaru Sukuna, also from Double Dealing Character.note It does help both Double Dealing Character and this series debuted in the same year, with few months of difference.
Maiko Ogure looks like she could be the sibling of Rue from Princess Tutu.
Houka Inumuta is like a more cynical version of Miki Kaoru.
If Ryuko is Simon and Satsuki is Rossiu then Mako is the Kamina of the three. There are many similarities, both are rather crazy, have weird perception of the world, has no real power when compared to the protagonist, are utterly fearless and will charge into any situation without much thinking. What is the most important however is that both serve as enormous moral support to the protagonist in their moments of need.
The Original Life Fiber is basically Lavos right down to its entire modus operandi.
For bonus points, Ragyo Kiryuin assumes a role very similiar to Queen Zeal.
Some fans point out the similarities to S Cryed. Both are conflicts between a chaotic Anti-Hero and an Anti-Villain working for the established order, who end up working together when a larger threat comes around. Kazuma and Ryuhou even have similar personalities and a similar dynamic between them to Ryuko and Satsuki.
Sanageyama's character and development is a condensed version of Sun Wukong's.
Gamagoori's transformed Goku Uniform has been christened "Bondage Iron Man" by some.
The Ambiguously Gay Duo (for Ryuko and Mako)
Satsuki's Mother Ragyo rapidly caught the nicknames "Rainbow Mom" (or, in a similar vein, "Ragyo Dash"), "Seven-Star Body", "Disco MILF", and "Mama Bad Touch", also, " Rainbow McFeelYouUp"
Harime gets "Nui Pie" for being pink, doing things like reaching across split-screens and leaning on her own Boss Subtitles text, and being incrediblyCute But Psycho (though that last one only applies to Fanon!Pinkie Pie)
Many people saw Satsuki's betrayal of her mother coming, based mostly on her characterization, which showed that she cared for her subordinates, and even Ryuko. It also helped that the series has several references to the Sengoku Period, and that Honnouji is the place where Oda Nobunaga was betrayed by Akechi Mitsuhide.
Many people had called that Satsuki was training Ryuko.
At the same time, many people called the twist from episode 18 regarding Ryuko and Satsuki being sisters.
Some people managed to figure out that Soichiro Kiryuin and Professor Matoi are the same person, after Ragyo revealed that Ryuko is her daughter.
The purpose of a Kamui's Stripperiffic-ness was very easy to guess (to avoid overwhelming the wearer). The lack of purpose for the high heels made it hard to be 100% sure, though.
Virtually everyone, from the beginning, theorized that Honnouji Academy was somehow a giant mech in one form or another, something that was confirmed in the OVA.
The Reveal: After the whole season being listed as "?" in the credits, the voice actor for the dog, Guts has tweeted himself out two days after the finale aired.
Katsuyuki Konishi: "...Let me give you two pieces of information. One, our DVDs and Blue-Rays are selling like hotcakes; Two, I'm Guts, GATTSU-GATTSUU~!!" note The creators mentioned at the episode 24 screening that the "?" credit was initially because, with Konishi being a big-name voice actor, they didn't want fans to guess that they wouldn't hire him just to play a Poke-Speaking dog and guessing that he was going to voice another character (the as-yet-unrevealed Tsumugu, who didn't appear until episode 5).
Episode 15 ends with yet another victory for Satsuki, along with the promise of a much-needed Info Dump in the next episode. Episode 16 opens with Senketsu stating that it's time for a Recap Episode! Just before the audience can get too angry, it becomes apparent that the recap will be a Motor Mouthed crash course that doesn't take a full minute. The episode proceeds as it should from there.
Senketsu: Those of you whose hearts sank at the words, "compilation episode", rest easy! Kill la Kill is known for its lightning pace! Even our compilations are wrapped up in the teaser!
Fans have been predicting Mako's death since the series began; episode 21 just takes this and runs with it by putting her into so many near-death experiences. Unsurprisingly, she survives the episode.
Episode 22 follows suit... and she still survives.
Symbolism: This is a good run-down of much of the mythological symbolism used in the series.
What Could Have Been: Nonon was originally going to be a punk rocker wielding an electric guitar and would use guitar riffs, but was scrapped in favor of the the marching band look and classical music since they better fit the high school theme of the show.
Ryuuko's original design was supposed to resemble Satsuki's. The fact that Satsuki wears Senketsu later on in the series is a Call Back to Ryuko’s original design.
Originally, Ryuko did not have any transformations. In fact, transformations were added very late into the shows development.
Senketsu’s mouth was originally green and in his transformed state, the middle exposed area between the straps was going to have a transparent stocking-like material. This was scrapped because Trigger thought it made her too sexualized.
In the earliest scripts, Ryuuko was supposed to be a bounty hunter with a price gun as her weapon. However, while the original script was scrapped for being too dark, the price gun concept was recycled into Tsumugu's sewing machine and the Osakans' money guns, and Ryuuko's original bounty hunter concept was recycled into Tsumugu. Also, Tsumugu's mohawk was supposed to be pink.
The Elite Four was supposed to be all girls and Houka was originally supposed to have black hair.
Aikuro Mikisugi was originally going to have red hair, along, with the idea of possibly making him one of Ryuko’s few blood relatives; originally going to be one of the many plot twists in the series. Due to his nature, this was dropped for obvious reasons.
Mako was originally going to have either a ponytail or pigtails, along with having black hair, and Goku uniform was originally going to be able to transform into what Wakabayashi described as a “giant Hulk-like Mako”. The transformation would have been named, “The Invincible Mako” or “The Unbreakable Mako”.
Nui's parasol was supposed to be a pink lightsaber.
Takaharu Fukuroda was originally going to have a larger role in the plot, actually, the series was initially going to have a greater focus on boxing, from which he was left over.
Senketsu and Junketsu were going to become mechs in their transformations. Apparently, Trigger has a "NO ROBOTS" policy, although recycled and reintroduced introduced in some of their transformations
Ryuko's transformations was originally written to be triggered by her running her bloody thumb down the stripes of Senketsu's collar. The sequence itself would have Ryuko doing a henshin pose before Senketsu engulfs and transforms her simular to the real time version in episode 2.