VitQuest: Guardians

Alright then, if you won't pay attention to the dialog I'm placing at the start of each post to try to steer this whole situation towards an outcome in which nobody on either side dies then I guess I'll just have to get more aggressive.
Paula and Gogo use Freeze Omega on the Hooded Figure and Mr. Fuzz takes advantage of the opportunity (even if they don't inflict numbness he should still briefly flinch) to teleport to him and quickly cut his Duel Disk in half (there's no way those things are made anywhere near as powerful as a shield) and then teleport behind him, sword over his throat and holding him between himself and Laguna.
"I'm going to ask you again, what do you want with our spheres? You may want to answer me this time."
The rest of my turn depends on if destroying the Duel Disk destroys all of the monsters on the field.
Monsters destroyed:
Stay on guard. That giant Gold Pikachu won't be able to use physical attacks without throwing everyone off of it, and everyone is under the effects of NulShock, so it's not much of a threat right now. They can't kill it right now anyways with me on it. Lupis will try to block Laguna's gunfire with his shield.
Monsters not destroyed:
If Queen's Knight has thawed out, Lupis will double attack them while Xerneas gores the Chimera with Megahorn and Poliwhirl hydro pumps it. If Queen's Knight is still encased the three of them gang up on the Chimera.

Heroes

Paula and Gogo use their strongest ice attacks on the hooded figure, but both attacks are canceled out by the summoned monsters. "You can't attack me directly while I have monsters out. That's against the ru-"As he talks, Mr. Fuzz teleports behind him, destroying the duel disk before holding the sword to his throat, threatening to kill him unless he gives information about why he wants the Spheres. Laguna just looks confused and Obama is apparently there too. He must have been summoned or something. The response is simply laughter. "Hahaha, look who thinks he's in control. I'm not stupid, you know. I planned for this." A blue streak across the sky hits Mr. Fuzz, knocking him over with a powerful face kick as Sonic the Hedgehog appears, wagging his finger disapprovingly. Malefio tries to ensnare Sonic, but he moves too quickly to construct and ice dome around. "You know, that was my favorite item. I actually enjoyed playing with that deck." Epona tries to kick the hooded guy, but can't reach him because he's on top of the gigantic Pikachu. "I was going to just beat you into submission and take those Spheres, but now I'm going to kill you. And you will SUFFUR." The one in the black cloak snaps his fingers as multiple characters reveal themselves from hiding. Quote comes running in from the rooftops, Mr. Game & Watch and a Rottweiler come walking in from a dark alleyway, Scrooge McDuck and Cubot walk in from behind Malefio with Flora and Rain following behind, Mr. L and Paper Wario fly in as paper airplanes before unfolding into their real forms, Montey Mole jumps out of the ground, Kaepora Gaebora and Iago fly in from above, Yarn Baby Bowser and Lightning drop down from the sky and Lightning uses some sort of anti gravity field thing to stop them from getting smushed into the ground, and Fawful and the Mad Hatter walk in from behind Golden Giant Pikachu. There is much chortles and fury. There's also Blinky somewhere, but he's still wandering around town looking for you. An item is quickly used as Mr. Fuzz starts to hallucinate with horrible memories of the past before the Hero Chao karate kicks him off the giant Pikachu, sending him falling off of it. "I change my mind about taking out the Sphere holders. Kill all their friends first so they watch in pain as there's nothing they can do."

You know, you seem to be ignoring the concept of a difficulty curve with this first boss fight -_-
Anyways, I've still got a trick or two up my sleeve. Mr. Fuzz uses Trance to dispel the hallucination effect while powering up. Have Paula cast Defense Down Omega, but Gogo doesn't mimic it. Instead, the random Esper comes charging out of the sphere and uses its signature move while Gogo mimics that, with Xerneas using Gravity to make sure the fliers don't dodge the attacks. Two uses of an Esper's signature move will do one hell of a number on this group, and if that's not enough Mr. Fuzz will perform a Trance Surge on the giant Pikachu and then warp about striking at the other stragglers with Lupis assisting with Multi Attack.

And yet you were going to screw Malefio over right at the beginning? Gee, I'm sure he was going to have so much fun getting all of his items taken away while he couldn't do anything about it because he trusted other players.
Anyways, Mr. Fuzz also discretely slips something out of his inventory. If worst comes to worst you'll find out what it is.

(Heh... Heh... Heh... Is this what's happening? No more joking around then!

Mox never felt unconscious )

Malefio will wait for Fuzz to do his things, then make Mox's dome levitate over the battlefield and Mox will throw poison fog bombs everywhere.

Malefio will cover himself and all allies with an ice dome so they don't get poisoned themselves.

Heroes

Paula uses PSI Defense Down Omega, lowering the defense of all her opponents while Fuzz activates his Trance mid fall to restore himself back to full health. Flora and Rain combine their PSI Shield Omega and Reflect skills to create a reflective barrier around all their allies. Fuzz then sends out his randomized Esper, resulting in Ixion being summoned. The electrical horse blasts a beam of electricity at the enemy, but the electricity is bounced backward. Luckily, the Nul Thunder blocks out the attack, but Gogo then copies Ixion almost as soon as the attack finishes and sends out powerful blasts of electricity at himself. Luckily the shield was just barely enough to keep him alive, but the mime isn't in good shape. Xerneas activates gravity to nullify all flying as Kaepora Gaebora and Iago fall to the ground. Fuzz activates a random Crystal Surge while in a Trance on the Giant Golden Pikachu. He channels the powers of Diabolos, casting Dark Messenger. The attack, however, is reflected back as a large ball of darkness attempts to suck him in and tear him apart. Luckily, he teleports away with Chaos Control and lands an attack on Scrooge McDuck using the Aqua Blade. Malefio starts to put his plan into action, but Kaepora Gaebora traps him in a long text box giving a tutorial on how to use ice magic. Mox prepares his bombs, but is unable to throw them seeing as the poison would just hit everyone. Quote fires his gun at Lupis' Makeshift Shield to damage it as Laguna taps the cloaked guy on the shoulder and points to a game he's holding. "What? Fire Emblem? I don't have time for games right now! I'll play it when I get home..." The cloaked guy then jumps off of the Giant Golden Pikachu with a royal sword in hand and rocket shoes on his feet. Just before he touches the ground, puffs of clouds appear around his feet and he's completely unharmed. He uses the rocket boots to dash up to TGC, starting a sword fight with him. It seems TGC has actually been paying attention and fights back, blocking strikes with his Pikmin Sword. Mr. Game & Watch hits the Makeshift Shield with his hammer ability, scoring a 2/10. Torm then appears next to Saria and slaps her continually across the face. Fawful and the Mad Hatter are too busy catching up with each other on what has recently happened and having chortles to act. Scrooge McDuck steps backward from Fuzz's attack as Cubot stands in the way, protecting him. Yarn Baby Bowser goes for a tackle on the Makeshift Shield to break it as well, but Lupis used sturdy materials for this one. Lightning runs in, using a combination of physical attacks to defeat Gogo as he returns to the Sphere. The Rottweiler continues to bark at Fuzz. Mr. L uses a Spring Jump to attack Paula along with Paper Wario using a powerful Wario Pawnch. Montey Mole then finishes Paula by chucking a large rock at her in a gentlemanly fashion. "WHY WON'T YOU DIE!? AGH! I'll have to try a different approach." The Ender Crystal appears, slowly healing all of the cloaked one's allies over time. He also switches to a staff instead of the sword.