There are five gamemodes: Battle, Minigames, Event, City Life, and The Dark Domination.
Battle is the standard battle mode of the game! It uses a new point system, where the players need to earn a certain amount of points to win the battle. Points can be earned by dealing a certain amount of damage or pulling off combos. However, you can change the settings to a standard time or stock battle in the options menu.
The Dark Domination is the story mode. It focuses more on platforming and involvs Dark Matter trying to take control of Megald, a shared universe where all the worlds from different series reside.
Event mode is the same as from Brawl, a series of missions you need to complete. After the final mission, you face The Elf King.
City Life is sort of based on Animal Crossing in gameplay, as the characters use their abilities across Megapolis (the sort of hub area in the world of Megald) for normal tasks, such as Mario using FLUDD as a firefighting device.
Minigames is pretty self explanitory. You and a few friends compete in a series of minigames, similar to the multiplayer mode from Sonic and the Secret Rings.
The Dark Domination
The story mode of the game, Dark Matter is planning to take full control over Megald, and it's up to the heroes to stop him!
Some characters switch out and share the same slot. They are marked with blue text.
Mario is the frontman of the Mushroom Kingdom and a main hero of Megapolis. He uses the fire flower and cat suit to fight.
The queen of the cosmos, Rosalina uses her magic powers and Lumas to fight.
THE KOOPA KING!!!!!!!!!!! Bowser uses fire breath and bob-ombs during battle.
The Stonekeeper destined to save Alledia, Emily uses her amulet's powers to attack. Her powers are a bit tricky to control, though.
Leon is a fox soldier assigned to protect Emily and help her defeat the Elf King. He uses a sword or can get help from the resistance during battle.
Elsa is the Queen of Arendelle, but her kingdom got kinda freaked out after they discovered her ice powers. Speaking of which, she uses her ice powers in battle.
Anna is the talkative sister of Elsa and princess of Arendelle. She is faster then her sibling and can throw snowballs at her opponents, or can run them over with a sleigh and get help from Olaf.
Pit is an angel and servant of Palutena, the goddess of light. He uses his diverse arsenal from Kid Icarus Uprising to attack, and can also fly.
Attack On Titan
Eren Jeager is a young boy who plans to pretty much commit Titan genocide. He uses his blades and 3D Manuveur Gear during battle.
Unten is the last of Beorn kind, and can use electricity to attack. He also can transform into Midas Unten or get help from Fanti.
A laidback Squavocado and the leader of his race, he uses his sword, Exulbore, and his light powers to attack.
The older version of Squav. He is the last Squavocado, and can throw avocadoes and acorns or whip his tail to attack. He is pretty weak though.
Zelda is the princess of Hyrule, and she attacks with her magical abilities such as Din's Fire and Naryu's Love. She also wields a sword and the Light Arrow.
Sheik is a ninja and alter ego of Zelda. She can shoot needles and use a whip, and is a lot faster then Zelda.
Ruby Rose is a student at Beacon Academy, who uses her oversized weapon, the Crescent Rose, to attack. The Crescent Rose doubles as both a sniper rifle and a scythe. It's every serial killer's dream! She can also run very fast.
Ruby Rose's partner in Beacon (despite not being too happy to hear that at first,) Weiss uses her rapier sword to attack, and it can also produce ice.
Cyclops is a member of the mutant superhero team called the X-Men. He is a sort of all-around fighter, like Mario, and can use his laser viser to attack opponents.
Wolverine is another member of the X-Men and definately the most popular. He uses his claws and is very durable due to his atamantium skeleton.
Calvin & Hobbes
A dynamic duo and staple of comic strips, Calvin and Hobbes play like the Ice Climbers from Brawl. They use snowballs to attack, and can transmogrify themselves into threatening creatures, such as Tyrannosaurus Rexs.
Silver is a hedgehog from the future who can use telekenesis to attack. He also can annoy enemies by saying "It's no use!" over and over again.
Meta Knight is a...well, knight, who is a very fast fighter. He uses his sword to fight and can fly temporarily.
Pilot of the Lor Starcutter, who attacks by shooting energy beams and with other magical abilities.
A hero from the Fire Emblem series, Ike attacks with strong blows with his sword that (somehow) emit flames.
Bugs Bunny is a quick-thinking rabbit who uses carrots and wisecracks in battle. He also has an atribute called "Slapstick Resistance," which makes him less vulnerable to blows that would usually be fatal.
Tony Stark was a genius who decided to make an Iron Man suit to fight crime and all that good stuff. He uses repulsor blasts and other weapons to fight. He also can get reinforcements from S.H.I.E.L.D.
Thor is a demi-god who controls thunder and like Pit, he assists the main deities. He can uses his hammer and can control thunder and other storm-like thingies.
A member of the Avengers, Black Widow uses her guns and other gadgets to fight. She is also a very quick fighter.
The first avenger joins the fray! He can use his shield to attack or send soldiers to attack for him.
Sister of Quicksilver and member of the Avengers. She uses Telekenesis and Energy Beams to fight.
Brother of Scarlet Witch and member of the Avengers. He is weaker then his sister, but moves super-fast.
Alpha is a user of TOME who attacks with his diverse movepool based on the greek gods, including zapping the opponent with lightning or creating a shield.
Alpha while being fully possessed by the Forbidden Power. He looses the greek-based moves, but can claw at opponents and is very fast and can also use the Forbidden Power as a weapon, paralyzing anyone who comes in contact with it.
Samus is a bounty hunter who hunts down Metroids and other crazy space enemies. She uses her arm cannon to shoot lasers and missles, and also can roll into a ball and set off crash bombs.
Zero Suit Samus
Samus just so happens to fight with orwithout her suit! She uses her laser gun which doubles as a whip, and her jet boots.
A bee who teamed up with a human to save the plants of the world after the bees stopped pollenating. (Even though the bees kinda stopped pollenating because of him.) He can fly and shoot pollen guns at opponents.
An alien invader who is trying to conquer earth!!!!!!!!! Yeah he'll probably fail. He uses his machines such as his backpack and a laser gun to fight.
Hal Jordan is a human and representative of Earth in the Green Lantern Corps. He uses his ring to create constructs that he can use in battle.
Gaara is a Jinchuriki of the Sand Village who eventually became their leader. He can use sand as both offense and defense and also can use the Shukaku demon sealed inside him.
A house-keeping robot who got turned into the "Super Fighting Robot" Megaman! He uses his Mega Buster and other weapons from his games to fight, and can get help from Rush.
A robot master reprogrammed by Wily to cause mass destruction, Elec Man uses electricity to fight. (Well, duh!)
Dipper is Mabel's twin brother and studier of the paranormal. He can create clones of himself and sing Babba songs to attack.
Mabel is Dipper's fun-loving sister who loves to mess around. She uses a grappling hook and bedazzler to fight, and can also summon Waddles to help.
A slightly insane film critic who attacks with the Number 11 and can pretend to be a ghost to confuse opponents.
The mayer of the world of Animal Crossing. He uses his tools and can pay bells to learn new moves.
How to Unlock
Mario's paper form joins the battle! He uses his hammer and partners to attack. He is a pretty formidable fighter. Heck, I would even say his chances of being defeated are paper thin. Hahaha, I suck at this.
Beat Event Mode as Mario
Princess of the Mushroom Kingdom, Peach attacks by throwing turnips, using her peach bomber attack, and her emotion powers.
Win Event Mode as Rosalina
Pink Gold Peach
The Metal Counterpart of Princess Peach, she is slightly stronger then Peach and uses Go-Karting to attack.
Win 150 Times as Princess Peach
Yoshi is a friendly dinosaur who helps (and gets slightly abused by) Mario. He can throw yoshi eggs and swallow other characters. He can also turn into yarn which.....doesn't really do much actually.
Win 75 Matches as any Mario character (Mario, Rosalina, Bowser, Peach, Pink Gold Peach, or Paper Mario.)
Palutena is the goddess of light and one of the high deities of Megald. She uses her staff and can summon more of her angel soldiers to attack. She also uses her light powers.
Win 100 Matches as Pit
White Bomber, a.k.a. Bomberman, is the cutest demolitionist I've ever seen. His solution to everything is BLOWING SH*T UP! What's not to like?
Use the TNT item 75 times.
The main protagonist (or at least the default player skin) of the game Minecraft, and can use his tools to battle. A downside is he has to craft his tools first before he can use them and he is vulnerable while crafting.
Win on the End stage 20 times.
Raiden is the god of Thunder and is more of a minor deity of Megald. He uses his electric powers and his staff to attack.
Beat Event Mode as Palutena
Wily E. Coyote
Wily E. Coyote is a Coyote always chasing after a Road Runner named.... Road Runner. Anyway, he uses a fork and a knive for melee attacks, and also can use ACME Weapons, but the ACME weapons mostly hurt him, making him sort of a joke character.
Win as Bugs Bunny 50 Times
Takeo Yumi was a normal boy until he got sucked into the Dream World, which SEVERLEY distorted his body. He uses his dream abilities to attack.
Beat Event Mode as Unten
A former miner/wannabe Mario brother who went insane after being fired from the mining buisness he worked for. He uses a flamethrower and a pickaxe to attack.
Beat Event Mode as Takeo Yumi
Mega Charizard X
The (cooler) Mega form of Charizard, Mega Charizard X can fly and use darkness and fire attacks.
Win 36 Brawls
Otherwise known as Strider Hiryu the Pokemon, Greninja uses his water shuriken and ninja-like skills.
Win 40 Brawls as Mega Charizard X
Phineas and Ferb
Phineas and Ferb's pet platypus, who is secretly a spy. He can use spy gadgets and tactics to attack. He also can disguise himself as Perry, which causes CPUs not to attack him.
Win 207 Brawls
Phineas and Ferb
an evil genius and Agent P's archnemesis. He uses his -Inators to attack, but they don't do much damage, making him a bit of a joke character.
Beat Event Mode as Agent P
The Archenemy of the X-Men, he can throw slabs of metal at the opponents using his powers, and can also levitate and create forcefields.
Defeat him in Story Mode
The merc with a mouth joins the fray! He uses his swords and guns to fight. He also can break the fourth wall to confuse opponents.
Beat Event Mode as Wolverine
One of Batman's enemies, he uses a gun and can send out mobsters to attack. However, he has to flip a coin to decide which move he's gonna use.
Win 50 Brawls as Green Lantern
A student at Calvin's school and a bully that likes to pick on Calvin. Moe can punch and shove opponents, and demand them to give him their lunch money.
Win as Calvin 85 Times
Spider-Man got bitten by a radioactive spider and now he makes a living fighting crime and cracking jokes! He uses his web-slinging and super strength in battle.
Win Event Mode as any of the Avengers (Iron Man, Captain America, Thor, Black Widow, Scarlet Witch or Quicksilver)
A monkey and former rival of Mario, He is a strong character who can attack by playing bongos, using his charge punch, and can heal himself by eating a banana.
Win on the Classic Donkey Kong stage 50 Times
Toon Donkey Kong
The Donkey Kong from the Donkey Kong Country series. He is the worst character in the game, as he can only attack with poorly written musical numbers and by acting like a pirate.
You unlock him by beating Event Mode as Donkey Kong. However, unless you are a completionist, why you would want to unlock him is beyond me.
The Angry Video Game Nerd
One of the most popular gamers on the internet, The AVGN uses bursts of rage to fight. He also can use the Nintendo Zapper and his game accesory armor.
Complete Event Mode as the Nostalgia Critic
A young girl with fire powers, Mika uses her fire abilities and space gear in battle.
Win 200 Battles
The psychic clone of Mew, Mewtwo uses his psychic powers to attack.
Beat Event Mode as Greninja
Inside Wall Maria
Attack On Titan
The city that was inside Wall Maria before it was breached and tooken over by Titans. It is a very normal landscape, but very rarely a Titan might breach the landscape and eat one of the players.
A strange world where the Endermen reside, hazards include Endermen attacking you and on rare occasions the Ender Dragon will swoop in. Also, if you fall into the void, you automatically lose 5 points.
Classic Donkey Kong
The first level of the Classic Donkey Kong arcade game! Ladders are climable and Donkey Kong will try to throw barrels at you.
The chatroom where many Fantendo users come to chat about random things. If the chat abruptly ends, you can gain extra points by somehow keeping the conversation going.
A flying vehicle and pretty much the base of operations for S.H.I.E.L.D. S.H.I.E.L.D. Operatives survey the battle, and will occasionally attack one of the players.
Toad Circuit is a racetrack in Mario Kart 7. Hazards include the big Toad statues falling down and smashing you or racers coming by and running into you.
Green Hill Zone
You know, that one level that appears in ALMOST EVERY SONIC GAME EVER!!!! It is a simple stage where you can go on the loop-de-loops and stuff, but Badniks will come out and attack you.
The battlefield of Smash Bros, where you can jump on and off the platforms, and..... watch the sun set, I guess? It's better then nothing.
The purple wasteland where TOME players can freely battle! Sometimes, however, you might get trapped in a battle grid.
Plants VS Zombies
There is more to this lawn then it seems. Zombies appear as a hazard, but you can plant Peashooters to fend them off.
Google Search Bar
The search bar for google. It may not look like much, but you can search things during battle, and the things you search could have a positive or negative impact on the battlefield.
A simple Mario level. Hazards include Koopa Troopas, Pirhanna Plants, and other enemies.
A floating island where the Master Emerald is located. You can try to harness it's power, but good luck man.
Zim's house on earth. GIR might come out of the house and attack you as a hazard.
Cookie Clicker Arena
An arena where the most addicting thing ever takes place. You can get Grandma to make cookies for you, which boosts your speed.
How to Unlock
Peach's Castle. Nothing much special, but you can fight on both the rooftops or the ground near the castle.
Win 50 Matches as Mario
One of two alternate dimensions you can go to in Minecraft (The other being The End.) Hazards include Zombie Pigman stampedes and Ghasts shooting fireballs at you.
Beat Event Mode as Steve
Similar to the one in Brawl, the stage will change to different type themes and such.
Win 90 Matches as Greninja
A forest where creatures of Grimm thrive. Beowulves and other enemies appear as hazards.
Win Event Mode as either Ruby or Weiss
FINAL DESTINATION! A dark barren platform where.... nothing much happens actually.
Beat Story Mode
The Pines' home for the summer, Gnomes will attack you and Grunkle Stan might come out and trick you to buy one of his tourist trapping items, lowering your HP.
Win 50 Times as Dipper
A concrete jungle designed for both combat and converse! There are no hazards, but a battle grid must be set up before any fighting can take place.
Win 75 Times on the ;Lavendera stage
The main menu of Fantendo! Nothing much happens here, other then the chance of the Fantendo Logo running into you.
Unlock Mika Sho
Mario Party Board
The board where Mario Party takes place! You can only progress forward on the board, and there are deathtraps hidden all around the area.
Win 50 Brawls on Peach's Castle
Sonic Spinball Arena
The Sonic Spinball Arena appears as a stage in the game. There are some obstacles in the stage, that fling you like a pinball, but that's pretty much it.
Beat Event Mode as Silver
Strengthens your melee attacks at the cost of 3 points.
Is similar to the Assist Trophy in Brawl, it can spawn one of 15 Assist Trophies to help in battle.
Creates a small explosion, depleting 5 points from any player in the explosion's radius except for the summoner.
Gives the user 5 extra points.
You can get one of seven colors of Chaos Emeralds, which allow you to teleport for a certain ammount of time.
One of the many minerals from the game Minecraft and probably the least useful. The Emerald allows you to trade special moves with one of the other players for a certain ammount of time.
Mark One Suit
The original Iron Man suit, you can hop into the suit, and can shoot missles. You also become really strong yet slow in the suit. If you take too much damage the suit gets destroyed.
Makes your attacks stronger.
Shoots 15 laser blasts.
Can be used as a melee weapon.
Sucks the nearest players into the Poltergeist 3000.
Jumps down and attacks the nearest opponent with his sword.
Tackles into enemies and attacks them with electricity.
Will shoot arrows at opponents.
Will hover over the stage and throw Spinies down at opponents.
Hits the nearest opponent with a barrage of punches.
Angrily rages at all the opponents. It doesn't do much damage though.
Flies around the stage shooting energy blasts at foes.
IT DOES NOTHING.
Shoots his ray gun in all directions.
Runs around screaming "Hi! I'm Daisy!" while hitting people with golf clubs.
Casts a magic spell, altering the battle in your favor.
Walks up to a random enemy and throws them into the air.
Will walk around the stage, damaging any opponent in his way.
Will slice at the enemies with his sword, the Pixel Cutter.
All of the bosses are bosses you face in Story Mode, with the exception of the Elf King.
Where You Fight Him
The Elf King
The Final Boss of Event Mode, he is the ruler of Gulfen, the nation of the Elves. However, he is actually the mere corpse of the Elf King who has been possessed by his amulet. He uses his amulet's powers to attack or can summon Elves to help him.
Dark Matter Mario
The first story mode boss, Dark Matter Mario is a clone of Mario. He uses dark powers as well as some of Mario's attacks and a hammer.
Megapolis Part 1
A "psychic" and archrival of the Pines Twins. He uses his "psychic" powers in combat.
The Mystery Shack
The devious prince of the Southern Isles, Hans attacks with his sword, can ride his horse, and also can use his authority to threaten opponents, though this doesn't do much.
Swordsman Dark Matter
The most powerful of 0²'s Dark Matter spawns, Swordsman Dark Matter uses his sword and can split into smaller forms of Dark Matter.
One of Dr. Wily's strongest creations, the Yellow Devil is a very strong boss who can shoot lasers out of his eye and smash you.
Dr. Wily's Factory
One of 0²'s strongest affiliates. You can fight him in one of several randomized mechs, each with it's own special ability.
Dr. Wily's Factory
0² (Final Boss)
The leader of the Dark Matter onslaught. He can fly, shoot energy beams from his eye, and can summon Dark Matter to possess players.