The Flying Dustmanさんのイラストまとめ

Loud House Van. Road Trip! The Loud van travels through Royal Woods.

Fairy World. Self explanatory!

The Ghost Zone.

Mezmer's Diner. Maybe too similar to the Candy Bar? Oh well, it's the most iconic location of the show.

Foo and Fee. Rides on each other's shoulders. Teamwork attacks.

Annie and Pony. Annie rides on Pony's back, who does most of the attacking.

Sanjay and Craig. Craig used as a weapon.

Pig/Goat/Banana/Cricket. Maybe like Pokemon Trainer? Switch between em all?

Fanboy and Chum Chum. Ice Climbers type deal.

Dudley Puppy. Attacks with his own clumsiness.

Kitty Katswell. Secret agent combat and weapons. Can take a beating.

Lincoln Loud. Kind of hard to imagine a moveset for, but has to be there.

Luan Loud. Pranks and practical jokes!

Tuesday X. Mix of combat and spy weapons. Different hair color alts.

Catscratch Trio. Stacked on top of one another.

Otis. Maybe with Pip on his shoulder. Milk based attacks?? Cow kung fu???

Bessie Higgenbottom. Puts her Honeybee badges to good use. Mighty Bee final smash?

El Tigre. Melee claw attacks, maybe an Ancient Tiger Spirit meter that powers him up temporarily?

Frida Suarez. Attacks with her guitar, ranged music attacks

Sartana. Can raise skeleton minions, undead magic.

Tak. Attacks with his power of Juju. Of course.

Jenny. Lasers, jets, the whole shebang! A no brainer for a fighting game.

Vexus. Another villain, another female. Transformations and Cluster moves maybe?

Danny Fenton. Ghost attacks. Maybe can posses opponents for a bit?

Ember McLain. Rock based villain.

Rudy Tabootie. Uses the chalk, practically writes itself.

Jimmy Neutron. Inventions and gadgets, Goddard recovery.

Beautiful Gorgeous. Playable villains are always fun, martial arts based attacks.

Sheen. Has JN and Planet Sheen outfits. Ultralord inspired moves.

Timmy Turner. Uses Cosmo and Wanda for his attacks.

Crimson Chin. Chin-based Melee attacks. Alt. Crimson Chin costumes.

Zim and Gir. Zim does most of the work, Gir used in his attacks. Maybe uses the spider pack?

Dib. Paranormal investigation gadgets and gizmos.

Catdog. An obvious choice, maybe cat attacks or dog attacks depending on the direction.

Action League Now. All at once, an attack for each one, melting, flying, etc.

Reggie Rocket. Extreme sports moves, bikes, skateboards, etc.

Eliza Thornberry. Animal based attacks.

Real Monsters Trio. Like the SNES/Genesis game, maybe all stacked up?

Arnold. Hard to imagine him fighting, but feels wrong not to include.

Helga. NOT hard to imagine fighting. Ol' Betsy Power Punch.

Norbert and Dagget. Like the Ice Climbers. Tail slaps, bite attacks, etc.