The strip "Everyone is Spooky!" has the Smashers dress up as certain characters while trick or treating at the house of the Sony characters, Mario is dressed as Bob Belcher, Donkey Kong is dressed as Kratos, Link is dressed as Shantae, Samus is dressed as Master Chief, Yoshi is dressed as Mike Wazowski, Kirby is dressed as Majin Buu Fox is dressed as Nick Wilde, Pikachu is dressed as Thor, Captain Falcon is dressed as Captain America, Peach is dressed as Princess Leia, Bowser is dressed as Raphael, Zelda is dressed as Princess Kenny, Falco is dressed as Donald Duck, Marth is dressed as James, Snake is dressed as Hideo Kojima, Ike is dressed as He-Man, Squirtle is dressed as Ivysaur, Ivysaur is dressed as Charizard, Charizard is dressed as Squirtle, Sonic is dressed a Pikachu, King Dedede is dressed as Pingu, Villager is dressed as Jason Vorhees, Mega Man is dressed Astro Boy, Little Mac is dressed as Saitama, Pac-Man is dressed as a laughing Emoji, Shulk is dressed as the interface of Adobe Photoshop with his head sticking out of a drawing of Little Mac (a reference to the Jossed theory that a leak of Shulk from 3DS was a photoshopped Little Mac), Duck Hunt Dog is dressed as Jake the Dog, Duck Hunt Duck is dressed as Darkwing Duck, Cloud is dressed as Ichigo Kurosaki, Ridley is dressed as Barney the Dinosaur, Simon is dressed as Prince Charming, and Isabelle is dressed as Hermione Granger.
Then there's the "Everyone is Invited" strips, which has characters dress up as certain characters again, Daisy and Diddy Kong dress up as Dora and Boots respectively, Isabelle is dressed as Roxanne, Incineroar dresses up as Randy Savage.
Thanks to overshooting the electricity input for their homemade respawn point, the fighters' attempts to bring back the Inklings results in them having Handsome Squidward's face. The description even says “Oh no, they’re hot!” The strip afterwards shows that it's permanent.
They return back to their normal faces by none other than Bandana Waddle Dee.
The page description for “The Ultimate Brawl/Melee” quotes a line from The Ultimate Showdown of Ultimate Destiny.
The last few panels of Last Plane Home, with Isabelle 2 taking a plane back to her island, looking at a photo of her with Isabelle 1, Kazuya, Incineroar, Kirby, and Piranha Plant with a smile, and the final panel having The End with the Japanese kanji for "end," (先) all references the ending to JoJo's Bizarre Adventure: Stardust Crusaders.
Incineroar's Gigantamax form is based on "Macho Man" Randy Savage.
" has the Smashers dress up as certain characters while trick or treating at the house of the Sony characters, Mario is dressed as Bob Belcher, Donkey Kong is dressed as Kratos, Link is dressed as Shantae, Samus is dressed as Master Chief, Yoshi is dressed as Mike Wazowski, Kirby is dressed as Majin Buu Fox is dressed as Nick Wilde, Pikachu is dressed as Thor, Captain Falcon is dressed as Captain America, Peach is dressed as Princess Leia, Bowser is dressed as Raphael, Zelda is dressed as Princess Kenny, Falco is dressed as Donald Duck, Marth is dressed as James, Snake is dressed as Hideo Kojima, Ike is dressed as He-Man, Squirtle is dressed as Ivysaur, Ivysaur is dressed as Charizard, Charizard is dressed as Squirtle, Sonic is dressed a Pikachu, King Dedede is dressed as Pingu, Villager is dressed as Jason Vorhees, Mega Man is dressed Astro Boy, Little Mac is dressed as Saitama, Pac-Man is dressed as a laughing Emoji, Shulk is dressed as the interface of Adobe Photoshop with his head sticking out of a drawing of Little Mac (a reference to the Jossed theory that a leak of Shulk from 3DS was a photoshopped Little Mac), Duck Hunt Dog is dressed as Jake the Dog, Duck Hunt Duck is dressed as Darkwing Duck, Cloud is dressed as Ichigo Kurosaki, Ridley is dressed as Barney the Dinosaur, Simon is dressed as Prince Charming, and Isabelle is dressed as Hermione Granger.