The super in which Samson turns them into a flying cockroach is called Gregor Samson.
Filia also sometimes says "HENSHIIIIN!" when using the attack.
Her aerial heavy punch, Salon Treatment, involves tossing her hair forward in an array of sharp instruments like forks, knives and spikes. One of these sharp instruments is the Lance of Longinus.
Her Updo special and Fenrir Drive super, in which Samson turns into a giant hair maw, happens to be a shout out to one of the Dustloop forum members, who suggested no game with any hair-fighters would be complete without at least one reference to the Pokémon Mawile.
The combination of her eating habits and Samson's appearance on her head bears a similarity to the futakuchi-onna, who in Japanese mythology is a woman with a mouth on the back of her head that's driven to eat and eat.
The bar in the opening of her story mode is a parody of the famous Nighthawks painting, and is named after Madman's Cafe.
Mike Z has described Filia as the game's Ryu-clone. She has Hadoken-motion "projectile" (actually a drill that comes out of the ground some distance away from her, as determined by the strength of the button pressed), Tatsumaki Senpukyaku-motion spinning extended attack that works in air, and Shoryuken-motion uppercut.
One of her attacks involves Samson turning into a donkey and pushing Filia as if he's bucking the opponent, causing a wall bounce in the corner. This may or may not be a reference to Ryu's Jodan Sokuto Geri, commonly known as the Donkey Kick, which also causes a wall bounce.
Samson's name comes from the story of Samson, who had superhuman strength so long as he kept certain vows, one of which was to neither cut his hair nor shave his beard.
One of her moves has her shouting "EXCELLENT!" while Vice-Versa throws up the heavy-metal "horns" gesture. During said move, Vice-Versa's eyes briefly turn into Kamina'sshades while Cerebella herself does the "Pierce the Heavens" pose.
Her Argus System is a reference to the Argus of Greek Mythology. That Argus had a hundred eyes (some of those eyes in his arms). When that Argus died, Hera placed his eyes in the peacock's tail as tribute.
Speaking of Hsien-ko's Tenrai-Ha, one of the new features added to the game in Squigly's patch is taunts, and to do Peacock's taunt, you have to do the same button input as Tenrai-Ha had in the Darkstalkers games. Successfully pulling one off guarantees that the next level 3 item drop you get is the move.
Another attack is her kicking and missing a football, yelling "Good grief!" when she trips. The alternate line for that technique is "Laces out!"
One attack turns her arm-eyes into blades, the classic visual pun on "looking daggers" at someone. The chances of her also shouting "Like THIIIIIIIIS!" are about one in five.
Keeping with the WFRR theme, one of her win quotes (when defeating Parasoul) is "You're not bad, you're just drawn badly" — riffing on Parasoul's undeniable resemblance to Jessica Rabbit.
Her jumping Medium Kick, which involves her beartrap mouth, is called "Nice Booby Trap", a line from Eddie Valiant about the bear trap that Jessica Rabbit keeps in a very punny place.
Her line upon encountering Filia is "Maybe she's born with it." It's part of the slogan for Maybelline hair care products.
Her line upon encountering Ms. Fortune is "A puddy tat!" — to which Ms. Fortune replies "Thufferin' thuccotash!"
Two of her win quotes are "I never forget a face, but for you, I'll make an exception" and "Either you're dead or my watch has stopped," all while smoking a cigar.
Groucho's not the only Thirties/Forties comedy icon Peacock pays homage to, either. She also quotes at least two of Moe Howard'scatchphrases ("Why, I oughta—" and "Spread out!"), which isn't surprising given her devotion to violent slapstick.
Her time-out animations seems to be a reference to Daffy Duck being shot by Elmer Fudd.
One of the Black Egrets, Molly, has a talking pose where she salutes, closes her eyes and has an open zigzagged mouth, which may remind some people of Wobbuffet.
Ms. Fortune's original outfit seems to be a reference to Makoto (the general appearance) and Lara Croft (the color and the pouches she has on her belt). Since then, her color scheme and hairstyle have changed to stand out from the other characters and be more fitting with the 30's era.
If she uses the super with her head off, however, she turns her hand into a drill and makes a pose like a certain mecha.
Her other super, Feral Edge, has her using her tail as a sword to dive down in similar fashion to Ragna's Belial Edge.
One of her special attacks is done with three repetitions of the same button combination (Quarter-circle forward + Punch), similar to characters like Fei-Long, Karin Kanzuki or Iron Fist. That's not the Shout-Out part, however - these types of characters are known as "Rekka-style" characters. What does Ms. Fortune say if you finish the three-hit special with one of two alternate enders? Either "Wreck-a your face!" or "Wreck-a your shins!"
She announces one of her low attacks by saying, "Tail spin!"
Sometimes when she bowls her head at the opponent, she'll say "Rolling start!"
She has a color palette resembling Yowane Haku, keeping the Vocaloid theme going and another palette is based off of Sheena Fujibayashi, as well yet another based off of Baiken.. There's also one that resembles Whitney.
One of her supers involves throwing scalpels the same way as Dio Brando.
One of her special moves is very similar to Chipp Zanuff's Alpha Blade special.
Valentine's Level 3 Super features the opponent getting seven different kinds of messed up, but said messing up is concealed behind medical screens and red flashes. Very similar to Akuma's Raging Demon attack.
If she loses by timeout, she explodes into a mass of bones as if hit by a Mortal Kombat 3 fatality, down to the multiple skulls and ribcages.
Sometimes when Valentine tags out to Double, she says, "Prepare for trouble!" It's the first line of the Team Rocket mantra from the Pokémon anime. (The next line of that mantra is "Make it double.")
Another one of her moves has her send out Leviathan's tail a long way to bring the opponent to her for a combo setup. Sound familiar? In addition, when using the move, she or Leviathan might say "GET OVER HERE!" or "C'MERE!"
One of Squigly's beta palettes (which was replaced just prior to release because Alex didn't like it) was a reference to Earthworm Jim, including making Leviathan pink and Squigly's head transparent to look more like Earthworm Jim's robot suit.
Another achievement is obtained for KOing two characters in the same combo. Its name, of course, is HappyBirthday.
The psychic director of Lab Zero is called Brain Drain.
Early on in Parasoul's story mode, Umbrella had apparently expected to see: "Sonic boobs, pool balls, and KFC Combos" when she came along to see her at work. It helps when you know Parasoul plays like a charge character, which is what Guile and Venom are considered to be as well. Parasoul's playstyle is somewhat reminiscent of Venom, as well.
One of the background characters is a sleeping man in a familiar outfit leaning against a wall next to a sand bag. Said sandbag looks an awful lot like Bonus-Kun from Waku Waku 7.
In Peacock's story mode we meet Hive, a resident of the Anti-Skullgirl Labs, who we can see in the background of the stage as well. Other than her name, her outfit and lavender hair bear a resemblance to Q Bee.
In the tutorial screen there is a drawing of Ms. Fortune's head forming the bottom slime in a slime tower from the Dragon Quest series.
Killing off 2 characters at the same time or dealing a very large amount of damage in one combo will result in legendary 3rd Strike commentator John Dangerous Rockefeller laughing. This itself is also supposedly a shout out to Dan Forden shouting "Toasty!" in Mortal Kombat.
One of the members of Cirque des Cartes, Hubrecht "Hertz" Adelhardt, has an appearance similar to Alex Louis Armstrong. His design is heavily influenced by Arcana Heart's Heart Aino, with pink hair in a heart shape, a red ribbon tied in a bow around the wrist, red suspenders (in place of a red tie), orange pants (in place of an orange skirt), and blue boots (in place of blue shoes). He's likely also a reference to Mr. Heart.
It's worth noting that as far as his color palette relations to Heart go, an in-game image in Cerebella's story shows him with very different colors (as well as different colors for various other troupe members than what is shown in most character art), so it is currently unclear whether or not this will remain as his color palette if he is added into the game. The hair and ribbon remain key to his design.
Visible on the right side of the New Meridian stage is The Kid's hammer, along with a Squirt. They're placed on both sides of a female NPC based on the art director of the very same game, seen here◊.
However, his bio lists "notKanji" among his inspirations.
The Medici Tower stage has a billboard for "Wave Motion Emitters" with a picture of a blue fireball above it. The famous Hadouken is sometimes called "Wave Motion Fist" by fans, after its literal translation from Japanese.
One of the characters at the card tables in River King Casino is dressed like Jotaro, as a nod to the encounter with D'Arby during Stardust Crusaders.