Kurtis's design is clearly based on Cyborg 002 from Cyborg 009, as is the item "Accelerator," a set of teeth that makes you move faster (009's ability to shift into Bullet Time was activated by a switch in his mouth).
The Chinese comedy Shaolin Soccer with the Shaolin Belt. On the description of the belt it says "No, it will not make you good in soccer."
The next episode "spoiler" for Chapter 11 is one huge shoutout to Legend of Galactic Heroes. "Another page in the Netherworld's history..."
E.T. gets a nod in things that appear in the Galactic Graveyard.
The Prism Rangers are one huge spoof of Super Sentai.
Adell himself is a big King of Fighters shoutout. He has the garb and personality (honor before reason, massive love of battle, etc) of Adelheid Berstein, the color scheme of Iori, and some of Rock Howard's moves (Vulcan Blaze derived from Neo-Deadly Rave, King of Beasts derived from Rising Tackle, Crimson Flame similar to one of Rock's charging punches).
The version of the "Turbulence" Spear technique here looks very much like Nanoha's Starlight Breaker (specifically, the angle is the same as when the spell was used in the first season), which is reason enough to give Rozalin a spear, even if she's terrible (Rank C with Spears unless she has the Spear Technique Scroll) at using it.
Then, there's the Z-Pirates. Just one blonde guy with a glowing golden aura (A Violator, to be precise) who comes riding a yellow cloud. It's freaking obvious who he's a shout out to.
The new Spear skill, Brunhilda, gloriously rips off Valkyrie Skirt. It appears again in Disgaea 4.
Mr. Champloo's On The Next segment places Mao as the lead character of a cooking anime similar to Chūka Ichiban!. As an added bonus, the main character of Chūka Ichiban! is also named Mao.
Members of the Diez Gentlemen include:
Bo Tie, an exercise instructor parodying Tae Bo.
Pauline, an orphan girl parodying Little Orphan Annie and Nello from A Dog Of Flanders.
Mao's Shine Beam: Leo Aiolia's, the Gold Saint, Lightning Plasma from Saint Seiya. He even wears a golden crown akin to Aiolia's during the Disgaea 4 iteration of the attack.
Quite a few On The Next segments in the series contain thinly veiled references to the title of an actual anime or manga series. However, one of the segments decides to throw those shreds of subtlety out the window, and calls the show being previewed Sayonara, Zetsubou-Sensei.
The Catsaber's Hairball Incident magichange skill has it steamroll the targets with a giant ball of yarn that grows bigger as more and more objects get stuck to it, Katamari Damacy style.
The Ghost's Pac-ghost Chaser throws enemy into a maze filled with dots and is chased by the ghost who has now taken on the appearance of Pac-Man. The fact that it's done by a Ghost is even funnier.
I call dibs on Clyde!
The Nekomata's Boxer Kitty is a dead ringer for the Hokuto Hyakuretsu Ken, complete with a similar battle cry, the name of the attack flashing onto the screen, and the target exploding. She also uses it when you create her on those voting for the Succubus.
Their Flaring Kitty Shot magichange skill is Gouenji Shuuya's Fire Tornado from Inazuma Eleven, complete with the shot scoring a goal.
Upon creating a Slime, a cut scene will play in which the slime transforms into a hand with it's pointer finger up and says "Yes, we can". The senators even acknowledge it as 'Slime Obama'!
Upon creating a Mothman, it will deliver a speech when a Nekomata runs up and tries to toss a paw glove at him only for the Mothman to quickly duck under it and let the Bouncers take her away.
Upon creating a Dragon, several characters will place one ballot in seven ballot boxes, each one marked with a certain number of stars. When all seven are filled, a dragon is summoned.
The Dragon's dialogue in the same scene takes the reference further, as it recites some lines that were spoken by Shen Long.
The Dragon gets a double reference with it's Dragon Assassinator, first releasing a dragon of fire it uses to batter its enemy before absorbing it for a power boost like Hiei, then proceeds to punch a hole through the victim in a fashion very reminiscent of Goku's finishing strike against King Piccolo.
In the new Omega Comet, an arrow is fired that travels through all the planets in the solar system, finishing with the sun, a direct rip on "Supernova" from Final Fantasy VII.
Disgaea 4's iteration of the 'Rising Dragon' Fist Skill is a nod to Shiryu's Rozan Shoryu Ha, more exactly, the scene where Shiryu first masters the technique, complete with a Prinny wearing the Old Master's hat at the top of the waterfall.
Prism Red's Rainbow Legend which gathers "former" Prism Rangers to face their enemy is a reference to the Legendary War.
If you create a Witch and send her to the support group and then talk to her, she'll come up with a idea to freeze a sardine into a blunt weapon. Just like Joachim did, only he ''found'' it.
Even more. The Durundal is a high-mid rank sword, which is also the Infinity+1 Sword of Karin, with her ultimate skill, Sonnestark becoming the ultimate skill of the Cockatrice. Also, the true final chapter deals with a mythological area filled with Malice, being used by someone close to the cast. Much like the final part of From The New World.
The Space Detective Gun is a miniature version of Daitarn 3's Leg Cannon.
Before you can create a Bouncer (whose innate evility increases the Defense of adjacent allies), you must pass a bill to "Make a Man who will Fight for your Honor".
The scene you get when you create a Gunner is a reference to a scene at the end of Castle of Cagliostro (which is also referenced in the Flash animation for Marisa Stole The Precious Thing).
When choosing a hobby during Pirate Creation, there are quite a few;
