- Bleached Underpants: ZONE has been hired as an animator. What is he already known for? Rule 34 flash animations, including one of Skullgirls. Neither he nor the Skullgirls development team seem to mind though. It should be mentioned that ZONE simply applied to a job opening.
- Contest Winner Cameo: This is one of the rewards in the Indiegogo crowdfunding campaign. It became popular enough to result in the announcement of two new stages, simply to show everyone's characters. (Keep in mind that each of these people had to donate $1,500 or more to get their characters into the game.)
- Matt and Woolie, Zone-tan (ZONE's mascot), and Sanshee's mascot all appear as background characters in the River King Casino and Glass Canopy stages.
- One notable NPC is a double whammy—the young man in the Glass Canopy stage wearing royal garb and a crown. That's Duckator, two-time EVO champion and so-called "King of Skullgirls". So not only does he get an NPC for backing the Indiegogo campaign, he gets to put in that specific NPC for being really good at the game.
- Cosplay: In one of Alex's artworks, the original main cast all dress up for Halloween. The list is: -
- Descended Creator: Mike Z, lead combat programmer, is voicing the Real Soviet Announcer, along with several side characters in story mode.
- Development Gag: One of Ms. Fortune's alternate colors is based on her original design◊
- Many of Double's transformations involve animations and concepts not used by the final designs of each character.
- Much of Fukua's moveset is remnants from back in the alpha stage of development, where the only three characters were three versions of Filia: a rushdown version (the "proper" one), a zoner version (who would later become Peacock), and a grappler version (who would later become Cerebella). Her projectile move and command grabs were taken from the latter two. This is all referenced in her "backstory".
- Cerebella's birthday is April 11th - the date of the game's Xbox Live Arcade Releasenote .
- Fukua started off as a typo made by a Lab Zero animator during a Twitch stream. She quickly evolved into her own character.
- The sprites used in many of Double's moves are recycled from conceptualized moves for other characters that were ultimately rejected.
- Doing It for the Art: The game has regularly been called a "labor of love" by Mike Z, and it shows.
- The use of high-res, hand-drawn art over 3D models was done because the developers simply wanted to, despite the fact it ended up requiring a much higher budget and large team of professional artists and animators. The gorgeous art is never once compromised, with every single character frame looking on-model.
- Big Band has a move where he whips out a trumpet. If you press another button, Big Band will play a note. You can actually play nearly the entire range of a trumpet with this move, encluding entire songs!
- Even after getting laid off, the dev team decided to make some sacrifices and start the crowdfunding to be able to continue growing the game. And for a limited time, offering what they make for free! Production for the game still continues: patches are released frequently, developers talk to the fans, and the artists stream the animations they're creating for the DLC characters.
- This even extends to the fandom. When the background characters submitted by high-paying backers were first shown, Mike Z stated that they weren't going to have any animation, since that wasn't in their budget. Several talented fans offered to create animated versions for them, even after Mike explicitly said that Lab Zero couldn't afford to pay them.
- When Skullgirls: Encore was released for PlayStation Network, only a handful of consumers who bought the original got their vouchers for the updated version from Sony as they are no longer handing them out. However, this wasn't going to stop Lab Zero Games from getting the vouchers from Sony and hand them out themselves for those that already have the game but not the updated version.
- There's the fact that with the PS4 and Vita port, Second Encore, they're adding multiple new modes, fully voiced story mode, and support for PS3 fight sticks. With this and the recent announcement of taunts for all characters, the game has definitely become one of the best video game examples of this trope.
- The fact that it's a western-developed gamenote whose voices are recorded in LAnote but averts using union-only talent in favor of non-union and anime dub talent is one in and of itself.
- Easter Egg:
- If Peacock is hit at the right time when she fries an ant in her crouching Mid Kick move, you can save it and then watch it run across to the other side of the stage. You can also spare said ant if you play as Peacock by immediately cancelling the move into a special. You can do this in rapid succession to get multiple ants skittering along the stage.
- When Cerebella connects with her Lock n' Load attack, there's a .02% chance of a random, poorly-drawn cat skittering across the stage. As detailed on the main page, an animator sketched a cat in one frame but forgot to take it out, and Mike Z said he wanted to keep it in as part of an Easter egg. The rest of the dev team agreed - but only if Mike animated it himself.
- Exiled from Continuity: Juju because her creator broke a non-disclosure agreement only a couple of hours after she was accepted.
- Fan Nickname:
- "Bionic Car", "Toontown Swag Wagon", or "Drunk Drivin'~" for Double's super move mimicking Peacock.
- Republican Double - Double in her red color palette. Comes from this video, which later expanded into a sort-of in-joke within the community: "REPUBLICAN DOUBLE FOR DLC!" (And now, thanks to the Indiegogo fundraiser reaching $250,000, it actually IS going to be DLC!)
- Combining the above two gives us "REPUBLICAN CAR!"
- "Swag Bag" for Peacock's grab super.
- "Science Shark" for Dr. Stanley Whitefin, the Dagonian scientist in the background of the Anti-Skullgirl Laboratory stage.
- "Lunch" for Minnette, the Dagonian waitress from Ms. Fortune's story mode.
- "Doublecock" or "Cock and Ass" for a team including Peacock and Double. Quite a popular team, as Double's Hornet Bomber assist provides a great way to get into Peacock's keepaway game.
- "Boob Nurse" for Valentine. No points for guessing why.
- "Sax-Q" for Big Band, referencing both his look and the way that Mike Z wants him to fight.
- Big Band was nicknamed "Detective Sax" by Japanese fans before they found out anything else about him; in a nod to the way names can change in different localizations of a game, the developers are actually planning to make that his official name in Japan.
- Ass-ist for Double's Hornet Bomber attack, due to its primary use being an assist.
- Fake Nationality: Parasoul, who speaks with a light French accent and has several French voice lines, is voiced by the Canadian-American Erin Fitzgerald. Erin does actually fluently speak French, however.
- Hey, It's That Voice!:
- Filia is voiced by Christine Marie Cabanos, the voice of Azusa, Squid Girl and Madoka and will also voice Avery. Her hair parasite, Samson, is voiced by Patrick Seitz, voice of Ragna the Bloodedge, Bob, Hugo Andore, Scorpion, T.J. Combo, Bass Armstrong, Cervantes de Leon...and that's just his other fighting game roles.
- Cerebella is also Nanoha Takamachi, Mio Akiyama, Riven, and Homura Akemi, and is basically a HUGELY confident version of Noel Vermilion! She also has an upcoming announannouncer pack and will be one half of the Skullheart's voice and Aeon.
- Peacock is voiced by Sarah Williams, who voices Sayaka Miki. Her craziness as Peacock lives on as eventually she became chosen to voice Jinx, another crazy girl.
- Parasoul is voiced by Erin Fitzgerald, who voiced Nazz, May Kanker, Kodachi Kuno, Erica, Janna, Sona, Chie Satonaka, and Shadow Chie. She's also going to be voicing Hive and Selene Contiello.
- One of Parasoul's soldiers is voiced by Kaiji Tang, known to internet denizens as Juicey Flannigan. He provided the English voices of Kenshiro in Hokuto Musou and Lee Chaolan in Tekken: Blood Vengeance. He's also the guy who's voicing Republican Double, giving birth to memes like "REPUBLICAN CAR!"
- Ms. Fortune is voiced by Kimlinh Tran, who also voices Fidget, Queen Serecta & Ven, Abridged!Chi-Chi, Hiimdaisy!Nanako, Amanda, and Princess H.
- Painwheel is voiced by Danielle Mc Rae, who also voiced Karma and Zorin Blitz.
- Valentine is played by Laura Post, who also voices Ahri and Arfoire. She's also voicing Ileum.
- Bloody Marie is voiced by Kira Buckland, the voice of Awesome!Meryl, Madoka Kyouno, and the princesses of Castle Crashers. She's also voicing Feng.
- The Announcer is voiced by Joshua Tomar who also voices Hiimdaisy!Dojima, Zanta, Trundle and many of Egoraptor's characters.
- Squigly is played by Lauren Landa, whom you may know as Kyouko Sakura and Litchi Faye-Ling. Therefore, instead of hunting for 'Black Squiggly', she's now a Squiggly herself. Huh. She'll also voice Venus
- While he hasn't played any other characters, Big Band's voice actor Rich Brown does announcements for GameTrailers.com.
- Eliza's voice actor has been in many, many things. Some notable roles of hers include Yoko, Yukari Takeba, Noire and the female Avatar, Katherine, and Crimson Viper (The last of which is one of Eliza's palettes).
- Sekhmet's voice is another big name in the industry. She's been Faye Valentine, Leona, Xianghua, and another version of female Avatar. So this game makes two characters that Wendee Lee and Michelle Ruff have essentially been the same person. Wendee will also voice Black Dahlia and Mrs Victoria.
- Albus sounds just like Rufus. Horace is Goku and Lucario. Chris will also voice Stanley Whitefin and Adam Kapowski.
- Because of this trope, it's possible to make a League of Legends team (Cerebella, Painwheel, Valentine, Parasoul, Peacock, Squigly (solely for Leviathannote )) and Eliza (solely for Sekhmetnote )) (not to mention having Trundle note do the match chatter), a Puella Magi Madoka Magica team (Filia, Cerebella, Peacock, or Squigly), a Dead or Alive Team (Filia, Squigly, Parasoul (solely for her 'troops') and Republican Double), or a BlazBlue team (Cerebella, Squigly, Parasoul and Eliza; due to their parasites being voiced by Ragna, Filia and Fukua also count).
- What's funny is that you can literally make a Madoka Magica team — Filia, Cerebella, Peacock, and Squigly all have alternate color palettes based on the characters their voice actresses played. While not an allusion, Ms Fortune gets the fifth palette (Mami Tomoe).
- With the announcement of voiced story mode, several other big names have joined the cast; Kyle Hebert as Roberto Contiello, Vitale Medici, Lorenzo, Irvin and Leduc, Cassandra Lee as Umbrella, Molly and one half of the Skull heart, Mike Z himself will voice Lorenzo Medici and Tommy Ten Tons, with Kaiji Tang taking the roles of Andy Anvil, Lawrence, Brain Drain, Grendel and Yu-Wan. Matthew Mercer voices Zane from Beowulf's story.
- Multiple Endings: It was part of the original premise that all starting characters sans Double got a choice after beating Marie. Only one of those endings made it into the finished product. The scrapped ones are:
- Filia: Wishes for her memories back, and becomes the Skullgirl immediately instead of it being drawn out.
- Cerebella: Wishes for Vitals to love her; he goes yandere and kills the Cirque Du Cartes sans Feng, who kills him. He comes back as a zombie, terrifying both of them, and Feng pleads with Cerebella to run away with her and start over.
- Peacock: Wishes for all the world's air to be turned into chocolate; Skullheart can't do it. Then to turn everyone in the world into cute puppies; the heart won't do it. Cue massive argument, each calling the other useless.
- Parasoul: Destroys the Skullheart, and kills Umbrella doing so.
- Fortune: Wishes for her old buddies back; she gets them back. As her new undead minions when she becomes the next Skullgirl.
- Painwheel: Wishes for freedom; is freed from all her remaining humanity as a much more powerful Skullgirl.
- Valentine: Seals the Skullheart and return with it to Lab Zero. While Brain Drain is pleased with that, he cannot let her betrayal slide, and does to her what he did to Painwheel.
- Old Shame: Mike Z has said that he regrets the time he spent playing BlazBlue.
"Whenever someone comes up to me and says that I inspired them to play Tager, all I can say is 'I'm so sorry'."
- Palette Swap: A breakdown can be found here starting about 6 hours in. You can also watch this video.
7: Past!Filia (before Samson)9: Miku Hatsune10: Rei Miyamoto12: Magneto14: Millia Rage16: Zeruel17: Scanty20: Fiona21: Shantae23: Millia Rage again, this time in her Guilty Gear Xrd outfit25: Ryuko Matoi
2: R. Mika3: Harley Quinn4: NiGHTS5: Hulk Hogan6: Hugo7: The bunny suit from her Story Mode ending.8: The Double!Cerebella palette fought in Cerebella's Story Mode.9: Battletoads14: Potemkin17: Maleficent21: Annie of the Stars24: Shigen Naoe25: Ira Gamagori
2: The Double!Peacock palette fought in Peacock's Story Mode.3: Alucard6: Lucky, the mascot of Lucky Charms cereal7: The pajamas from her Story Mode opening.(9): Cirno11: Milk Chan12: Cable14: Hsien-Ko/Lei-Lei16: The Warden17: Inspector Gadget19: Raspberyl20: The Grinch21: Princess Daisy22: Indian Peafowl23: The Joker25: Annie of the Stars
7: The fencing outfit from her Story Mode ending.8: The Egret color scheme.9: Kneesocks11: Mitsuru Kirijo14: Kula Diamond15: Alruna16: Megurine Luka17: Jessica Rabbit19: Poison Ivy20: Fluttershy (Parasoul's sister Umbrella has the same color scheme, but this palette has Fluttershy's blue eyes instead of Umbrella's pink ones.)22: 90's Jean Grey23: Kyoko Minazuki24: Captain Commando25: Annie of the Stars
6: Shelly10: Fran11: Xbox 36012: PS313: Blue Mary14: Leona15: Pussycat16: Moriah the Thief17: Etna19: B. Orchid21: She-Hulk23: Makoto Nanaya25: Elena
- Ms. Fortune
7: Brain Drain8: Valentine11: Day of the Dead (Mexican holiday) colors12: Sentinel14: Vega15: Jason Voorhees16: EVA Unit-0117: Haku18: Basara24: Spider-Man25: Berserk Ryuko
3: Mai Shiranui4: Nurse Hallow5: Nurse Patty6: Nurse Easter7: Skullgirl coloring from Valentine's Story Mode ending8: Nurse Christmas9: The nurses from Silent Hill.13: Anesthesia14: Baiken15: Sam the Mechanic16: Yowane Haku17: Haruko Haruhara18: Kasumi20: Shinobu21: Nu-1322: Taki25: Strider Hiyru
2: Squigly (Double has the right colors when she morphs into Squigly in her Level 3 super)3: Red4: Based on Double's old design.5: Umbrella (see Squigly palette)6: Arakune7: The "stomach" colors from her story mode ending.8: Based on Double's character poster.9: Oil10: Saya no Uta11: Neapolitan ice cream12: Ms. Victoria (meaning that if you do Double's Level 3 super, she'll actually have the correct colors when she morphs into Victoria)13, 14, 15, 16: Water, Silver, Gold, Blood17: Envy18: Ditto20: The Skull Heart21: Christmas Tree22: Ichiro Irabu23: Cubia24: Life Fibers25: Mystique
3: Lydia5: Rin Kagamine7: How she looked when she was alive.8: Marie12: Zozo13: Emily15: Zone-tan17: Sucy19: Gum20: Yoshika Miyako21: Alice23: Sable24: Beetlejuice25: Nui HarimeA palette based on Earthworm Jim was removed; Alex wasn't satisfied with the way it looked.
5: White Ranger6: Big Zam7: Sepia-tone9: Sturm10: Nonon Jakuzure.11: Famicom12: Mega Drive13: The Question14: King Dedede15: Original, based on military uniforms16: RoboCop17: Big The Cat18: Gato19: The Big O21: Big Pimpin'22: Negaduck23: Metal Flotsam24: Captain Spaceman from Spaceman: Unarmed and Ready to Launch, a comic by Lava Punch (the studio Alex Ahad had previously worked at)25: Robo-Ky26: Jotaro Kujo
- Big Band
4: Decapre6: Shadow Lady7: Akuma (Who started out as a buffed headswap of Ryu and Ken)10: Sean Matsuda11: Rain12: Reptile14: Falco Lombardi15: Alpha-15216: Violent Ken19: Allen Snider20: Red Venom21: Honoka22: War Machine23: Robo-Ky Mk. II24: Ryuko Matoi brainwashed by Ragyo Kiryuin25: Orochi Shermie
2: Cleopatra3: Eliza7: Bloody (from Eliza's Story Mode)11: Tharja12: Doctor Doom13: I-No14: Queen Odette15: Dio Brando; Albus and Horace as The World from the original manga, with Sekhmet as The World from Jojo's Bizarre Adventure: Heritage For The Future.17: Velvet18: Ragyo Kiryuin; Sekhmet as Life Fibers, Albus as Rei Hōōmaru and Horace as COVERS19: Red; Sekhmet as The Process21: Porrim Maryam23: Urien; Sekhmet as Twelve, Albus as Gill and Horace as Necro24: Raven; Sekhmet as Trigon, Albus and Horace as Beast Boy25: Elizabeth; Sekhmet as Thanatos
3: Sexy Firefighter7: Beowulf's superhero attire from his ending8: Grendel (Backer Color)9: El Santo10: Alex12: Wolverine13: Jax Briggs (Backer Color)14: Kanji Tatsumi (Backer Color)15: The Green Ranger16: Yamcha17: Jon Talbain18: Naked Snake (Backer Color)20: William Riker21: Ultimate Warrior (Backer Color)23: Batman24: The Baz25: Captain America
2: Alt color Fei-Yen3: Colon4: RAcaseal5: C-3PO6: Vectorman7: KOS-MOS8: Terminator9: Monsoon10: Aigis12: Iron Man13: Robo-Ky14: RX-78-2 Gundam15: Bass16: Motoko Kusanagi17: Sarah N. Dippity (backer color)18: Samus Aran in the Varia suit19: Samus Aran in the Gravity suit21: T-elos23: Kireek24: R-DASH 5000 (backer color)25: Spiral
- Promoted Fanboy: As noted on the trope's page, Skullgirls has several of them on the staff already. But in the case of the game's own fandom there is the message board at Skullheart.com, which has cut a deal with Lab Zero to become the official forum of the game.
- Also from the game's own fandom, Skullheart news writer Kai Kennedy (Better known as Night Phyre) ended up auditioning for the role of Beowulf and got the part.
- Rule34 — Creator Reactions: The announcer in Skullgirls has voice-acted in a Skullgirls porn flash on Newgrounds submitted by Hentai creator "ZONE-SAMA", who is a fan of the game.
- Saved from Development Hell by the Fans: With considerable help from the Indiegogo campaign.
- Screwed by the Lawyers: In an attempt to avert it, Marvelous AQL required Lab Zero to change the color of any red cross on a white background (to avoid possibly trademark infringement with the Red Cross) when the Japanese release of Encore was coming about. Naturally, this primarily affects Hospital Hottie Valentine, who had the color of her crosses changed to... purplish-pink. The developers have outright said they're not happy with the decision, but they didn't have much choice.
- Star-Making Role: This game allowed many voice actresses to make names for themselves, in particular Danielle McRae, Christine Marie Cabanos, Kimlinh Tran, and Sarah Williams.
- Rich Brown can usually be found narrating videos for Gametrailers. Big Band was his first voice acting role, and Rich had already developed a fandom before the character was released.
- Troubled Production: You have no idea...
- After the game's first patch premiered on PSN with a different developer logo on startup, the developers released a statement explaining the long delay: the entire Skullgirls dev team had been laid off by Reverge Labs six months earlier, and had only just finished setting up a new studio (Lab Zero Games) in collaboration with their publisher (still Autumn Games) to continue work on future patches and DLC.
- The dev team was laid off due to the massive legal issues that Autumn Games and Konami were involved with due to Def Jam Rapstar, a game that did not effect Skullgirls's development in any possible way.
- The team was having some issues with a patch size limit on Xbox; the memory needed for the patch was over 100 times the size of the limit. It eventually came out.
- Now, things are getting even worse for Lab Zero: Lab Zero recently decided to legally cut all ties between Skullgirls and Konami so that there wouldn't be major headaches regarding patches for the console versions (other than the Japanese PSN version, which has a different publisher). While this cutting of ties was successful, it led to a major side effect: Konami requested that Skullgirls be delisted from PSN and Xbox Live on the 17th and 31st of December, respectively. Did we mention that L0 was only notified of this secondhand, after it was already approved by Sony? The issue was quickly settled, however, and the game is being re-released (for free to previous owners) as Skullgirls: Encore, transferring publisher rights from Konami to Marvelous AQL (the same publisher as the PC release) and finally getting Squigly out on consoles (along with plans to release any new characters concurrently with the PC release). The move to the Encore edition will also release the game in Japan for Xbox 360, under Marvelous AQL's publisher ownership.
- Lab Zero just can't catch a break. Within only a few days of announcing the plans for the Encore edition, the Japanese publisher of the PS3 version (which, up until the Encore release, was the only console version of the game available), CyberFront, was closed by its parent company. Skullgirls, being rather popular in Japan, was scheduled to get an arcade release there through a separate publisher. What this currently means for the future of the game in Japan is uncertain, but NESiCA — the arcade publisher — made a point of featuring Skullgirls Encore in its presentation at JAEPO 2014, including a taped message from Mike Z and Alex Ahad.
- After a few months of generally good times (involving the release of Encore on both consoles and Big Band), the problems have started up again: Lab Zero has been forced (by Marvelous AQL) to alter the color of any red cross on a white background that appears in the game (including Valentine's default palette) in an attempt to avoid getting sued by the Red Cross and get the Japanese PSN version of Encore out on time. As noted above, the developers aren't happy with the change.
- What Could Have Been:
- There's concept art for things like Supermodes◊ and Filia having a bobby-pin sword.
- Originally, Umbrella and Squigly were supposed to be part of the initial eight characters, but some technical difficulties and the story need for some villains in the roster led to their spots being reassigned to Valentine and Double. Fortunately, they are confirmed to be the first DLC characters — or at least one of them was...
- It was mentioned on a few occasions that, originally, the custom assist function would actually be able to register Super Moves. It didn't take them much experimentation to find this was a Game Breaker.
- Later, when more Special Moves were being made to be usable as assists for a patch, several moves were added, and then removed due to being "too good". A good example would be Cerebella's Pummel Horse move.
- During development, Ms. Fortune had a palette◊ based on Tira's costume from Soul Calibur V. In fact, a sizable number of palettes didn't make it into the final game, as the marketing guys realized they could sell color pack DLC later on.
- The developers tried to implement a Versus Character Splash, but left it out due to the increase in loading times.
- The amount of planned characters for the game was around 36. Unfortunately, the budget problems made it so the other 28 characters would be released later down the line as DLC. See also Troubled Production.
- Parasoul's sniper (who helps her out in one of her Blockbusters) originally had an entire character behind it named Juju (Parasoul referred to her as this rarely, any other time her name would be Number 13), but there were a lot of legal issues because she was created by a fan of the series, so Lab Zero technically didn't own her. After one of the artists took interest in her, she was available as a possible DLC character... until after the original creator signed the NDA, and then violated it WITHIN HOURS by posting about in a public forum which the devs read. Needless to say, her existence was wiped off the face of the earth, and she's now basically Retconned out of canon permanently.
- Squigly originally was going to have an Earthworm Jim palette, and was featured in the beta for some time before being removed because Alex Ahad didn't like it. However, it was patched back in the PC version April 19th, 2014.
- Originally, Peacock was to be voiced by Marianne Miller.
- Filia's Time Over lose animation originally had Samson rip her shirt off, exposing her breasts while Filia tries to cover herself up.◊ It went unused due to objections from Lab Zero.
- Big Band was supposed to have a robotic voice, but that would take away Rich Brown's smooth voice.
- According to a Q&A, it is said that if Skullgirls wasn't going to be a fighting game, it was going to be an RPG or Beat 'em Up.
- In a way, Double subverts this: she has several move animations taken from other characters that would have otherwise never even appeared in the game (for example, Bandwagon Rushdown was originally an idea for Peacock's pre-fight intro).
- Fukua also somewhat subverts this using data from a 'Zoner' Filia who would later be the basis for Peacock and a 'Grappler' Filia who would later be the basis for Cerebella. She also uses several of Filia's unused animations in her attacks.
- Eliza was originally conceived with a gameplay mechanic where whenever she got damaged by the opponent, she would leave pools of blood which can damage the opponent later. Between bumping the ESRB rating from Teen to Mature if this was fully implemented, and the fact that Eliza has a bunch of other mechanics to work with, such as having bodyguard assist characters, Shekmet and even musical mechanics similar to Squigly and Big Band, the blood mechanic has been cut.
- While the youngest and by far the shortest playable character in the final game, Peacock's initial character design◊ looked older, was about as tall as Valentine standing up (not counting Peacock's hat), and had a narrower profile because her skirt didn't flare out as much. This may have been done for balance reasons, so she wouldn't have such a ridiculously large hitbox.
- The original plan was for the cast sans Double to have 2 possible endings in their story mode, but time and resources constraints scrapped that idea. The script of those scenes can still be found in the game data.
- Word of God: An extensive amount of information on the game's world has only been revealed by Alex in streams and the like. For example:
- The game takes place in fall (which was implied with the trees in Maplecrest).
- In terms of climate, the Canopy Kingdom is based off the northern US and northern California specifically - mostly "whatever looks cool".
- Worshipers of the Trinity are called "Trinitists".
- The crosses in Valentine's eye designs are a result of drug use in Lab 7. An accident in Lab 7 damaged the bandaged eye to the point of apparent uselessness; Valentine's failure to replace it (which the Labs could do for her) is an aesthetic choice on her part.
- The children in Lab 8 are various orphans with conditions that would make them have trouble leading a normal life without the lab's help. One of the reasons they went rogue was so they could do help people in ways besides turning them into weapons.
- The No Man's Land is a collection of small countries and territories that fell into chaos when the three kingdoms quickly stopped their war to fight the Skullgirl. Bandits were easily able to acquire military hardware and human trafficking became common. Marie and Peacock are from Rommelgrad, a town in the No Man's Land.
- Not all the members of the Cirque de Cartes are aware of the fact it's backed up by the mob; Hubrecht is the most commonly cited example.
- Annie's TV show is similar to The Super Mario Bros. Super Show: it contains live-action sections in between cartoons, with cartoon counterparts of the live-action hosts.
- Some groups face extensive discrimination, such as Ferals like Ms. Fortune and Parasite hosts.
- Valentine's real name is Valerie.
- Characters' voice lines (and sound effects):
- Character heights, weights, blood types, and measurements:
- Filia: 5'4", 142 lbs, AB, 34C-26-39
- Cerebella: 5'6", 130 lbs, B, 32D-23-36
- Peacock: 4'6", 94 lbs, B, 18A-17-20
- Parasoul: 5'10", 156 lbs, A, 34DD-24-38
- Ms. Fortune: 5'8", 127 lbs, B, 32B-23-34
- Painwheel: 5'1", 375 lbsnote , SGnote , 21B-18-23
- Valentine: 6', 160 lbs, A, 36E-25-40note
- Double: Varies, varies, none/all, varies
- Squigly: 5'3", 118 lbs, Embalmed (formerly A-), 28B-21-38
- Big Band: 7'8", 5000 lbs (only 95 of which is organic), B♭note , ???
- Eliza: 5'11, 160lbs (on average), Any, 36DD-24-41 (on average)
- Beowulf: 6'7, 287lbs, O, 55-38-42
- Robo-Fortune: 5'6, 440 lbs., 10w-30 synthetic oil, 32B-23-34 (adjustable)