Everyone hopped out of the Time Hole as they stared directly at the doors to Shroob Castle. With them is Diluc, Kagura and Tager. And then Class VII and the Ashen Wolves brought out their pokemon to join the fight. But will be by their trainer side.

"Here we are… the belly of the beast." Bowser said as he cracked his knuckles. "Oh, I'm gonna enjoy wrecking things up."

"Agreed." Daisy smirked. "Oh, they're gonna regret messing with us."

"I think it's time to make our grand entrance." Natsu smirked, his fist igniting.

Stuffwell hopped out of Mario's pocket. "By hinges and handles! The Shards are going crazy!" He said as he opened up and the Cobalt Star floated up. It circled around the group before heading to the door and then fired a bright light directly at the doors, opening the doors up for them, then it floated off.

"Wait, why is it going away?!" Luigi asked.

"It's probably gonna lead us to Peach. Let's-a go!" Mario said as they started running through the doors… where they were immediately greeted by an army of Shroobs.

"Shroobs!" Princess Shroob's voice had echoed from the top of the castle. "Those fleshies have made their way to our castle! Do not let them rescue Princess Peach! DESTROY THEM!"

"DESTROY!" All the Shroobs yelled.

"You're the ones who are gonna be destroyed!" Bowser declared. "We're gonna take Peach back from all of you if we have to!"

"Yeah! We're gonna take her back!" Ruby cheered.

"Goo goo!" Baby Mario cheered.

"Let's rock!" Yang exclaimed.

"Let's kick some aliens' ass!" Sara smirked.

"EVERYONE! FORWARD!" Rean exclaimed

(Hyrule Warriors Age of Calamity ost - Final Battle or Fire Emblem Warriors ost - Journey through Time)

The heroes charged at the Shroobs as the Shroobs did the same where they were immediately clobbering each other left and right as Bowser punched some Shroobs toward a wall as he rolled toward them and crushed them as he then breathed fire. Gaius use his Craft, Gale Stringer, towards the group of Shroobs and blast them towards the wall as his Tranquill use Air Cutter, his Phanty use rollout and the Shroobs were used as Bowling pins, his Rufflet use Aerial Ace on the flying Shroobs, His Ponyta use Flame Wheel and use Water Pulse on the Shroobs. Weiss and Winter quickly slashing at them and sending ice their way to freeze them solid as Yang and Daisy punched them out of their ice while Yuri and Alsin quickly stabbed them.

"Ahahahaha! Behold my magnificent new spell and drink deep if it's power!" Constance laughed and cast her new spell.

The sky was launch with a sudden large fireball, large ice, powerful lighting, Dark magic pillars, and tornado appeared out of nowhere and strike all the Shroobs as many screamed in agony.

"Holy crap!" Gray blicked as he took down two swords with his Ice Make magic.

"Did you see? What power! What grace! All has been reduced to rubble in a stroke!"

"AAAH! It's Chaotic out here! Take cover! AAAAAH!" A Shroob screamed before he was blasted by Constance's new spell.

"Bwahahaha! Not bad blondie! You're making this easy for us!" Bowser laughed.

"My goodness her magic surprise me... and scares me." Kamek said as has he launch his magic at the Shroob.

"Constance, just remember to control your magic! If you lose control, you'll end up taking us with it!" Alsin exclaimed as he stab two Shroobs.

"And the last thing we need is to get fried." Yuri sighed as he throw a Dagger at one of the Shroob as his Absol use Night Slash on the Shroob.

"Get that blond girl! She's the one who cast that magic! Destroy her!" A Shroob yelled and some of the Shroobs are rushing towards Constance.

"Oh dear... It would appeared that I might endanger myself." Constance Sweatdrop.

"Yeah I had a feeling. But..." Hapi said and then she sighed. And sighed again. And sighed again.

Suddenly three monsters appeared out of nowhere. One if a Giant Wolf, the other is a Giant Bird, and the other is a Giant scale monster.

"AAAH! Monsters?! Where did they come from!?" One of the Shroobs exclaimed before he was taken out by the Giant Bird.

"The hell?! She can summoned monsters?!" Ragna exclaimed as he took down a group of Shroob.

"Only when she sigh. Everyone, leave the giant monsters to the Shroobs. They'll most likely be targeting them now." Yuri said.

"FIRE DRAGON'S ROAR!" Natsu yelled and send the Shroobs to ash

"SKY DRAGON'S ROAR!" Wendys yelled and sending several Shroobs into the air

"ICE MAKE: CANNON!" Gray yelled and fired multiple shots at the Shroobs.

"Storm Bringer!" Jusis cast his wind magic and summons a great tornado towards the Shroobs as Ruby jumped over and slashed them down to the ground as a few Shroobs shot at her, but she deflected them with her scythe as Rean and Levi slashed at some Shroids. The Shroids fired lasers at them but Emma cast her Mirror Magic and reflect the lasers back to the Shroids to destroy them.

Several Snoozorbs rolled in and started firing lasers at the group, but then Sara and Fie went running over as Sara use her Craft: Thunder Vortex and gather them together in one spot. The Snoozorbs fired lasers at them while Fie slashed through them repeatedly, then were quickly destroyed by Sara's Flash Craft. Guardian Shroobs came running in with Dr. Shroobs as they started blasting them where Kagura deflect them while running at them and then slashed at them with Joker, and Fox. Tager charge towards the Shroods and then use Magna-Tech Wheel on them as several of them got electrified.

Several Shroobs surrounded Diluc and Ironwood.

"Looks like we're surrounded." Diluc said.

"So it would seems." James nodded

"Isn't the first time I been surrounded." Diluc said and then use his Craft: "Burn!" He yelled and with the swing of his Claymore, he send out a giant Phoenix towards the Shroobs as many of them screamed before got roasted alive. Then Diluc zoom, leap over and dive attack and then launch several slashes and took many of them out. Some of them fire at him, but then Diluc leap,stop on one of them and then launch several combo slashes with reflects to each Shroobs.

"My, he certainly know how to make a show." James chuckled and then he begin to shoot many Shroobs who got distracted by Diluc.

Several Tashroobas ran in and transformed into raging purple Wigglers, but Bowser used an uppercut on one of the Tashroobas while Balthus launch a powerful punch with enough force to send many of them flying, where a spiky rock shot up and impaled the Tashrooba before disappearing, while Clobbopus charge towards the other Tashrooba and use Brick Break... and then latched off where Sara's Pikachu and Machias's Yamper finished it off with a Thunderbolt.

The Giant Wolf and Giant Beast roared as slash countless Shroobs and then it send many of them flying towards the castle doors. Then they both charge and then crash the doors, created an opening.

"Hey look at that, the monsters I summoned open a pathway for us." Hapi said.

"There are warp pipes leading to different parts of the castle. While some are encased in crystals. I don't think the monsters would break it." Dulic said.

"You're right. Split up the castle and see what you can find!" Yuri ordered as they took off in different directions of the castle.

The Mario Bros, Daisy, their baby selves, Laura, Machias, and Crow encountered a Shroobsworth where its Shroob Intern kept blasting them with ray guns but they kept avoiding the attacks and Crow and Machias return fire while Laura charge and launch a powerful spin slash. Crow shoot at the Shroobsworth but Shroobsworth deflected it to Mario who had Baby Mario hammer it away as it was then deflected to Luigi as Baby Luigi hammered it hard enough to knock it into Shroobsworth which was enough to daze him. "Hiyah!" Baby Daisy yelled, throwing her boomerang at the Shroobsworth to knock him on his back, as the Intern Shroob hopped off and kicked him away.

"Sayonara sucker!" Crow smirked and then shoot at several bullets at the Intern Shroob who dodge until they lock onto it. It panicked before it completely obliterated.

"Nice one!" Daisy praised as she and her baby self hit the switch to activate a pillar and then took off.

Roman found herself back to back with Ruby while surrounded by Shroobs. "Ya know, I never thought I'd see the day where I'd be back to back with my arch nemesis."

"You say that like it's a bad thing." Ruby eyebrow.

"Heh, I suppose so." Roman then smirked. "Think you can keep up?"

Ruby cocked her scythe. "What do you think?"

"Heh, I thought so." He said as they proceeded to lunge at the Shroobs while Yang and Neo made quick work on the Shroids nearby. Neo quickly swung her umbrella to knock a Shroid up in the air as Yang jumped up and punched it straight into the Shroids down below. She then unleashed a powerful punch right after, which hit the Shroid and exploded. Yang landed on the ground.

"You know, this feels weird sighting alongside you like this." Yang said to Neo. "Although I'm still pissed at you for beating me, it's nice to call to a truce for now."

"Aww, warming up to me?" Neo asked with a sign

"Don't flatter yourself." Yang said as they leapt forward while Bowser and his younger self breathed fire at the Shroobs as Bowser picked up a Snoozorb and threw it to the ground where Kamek lit ablaze with his magic, then Baby Bowser jumped over and hammered it to knock it down… And then Skull destroy it with his Bat.

"Ha! Nice!" Skull smirked

"Found the switch!" Panther smirked as she hit the switch, where all four statues lit up and fired at the crystal encasing the warp pipe. They all regrouped and hopped in the warp pipe, while just outside, a few UFOs went crashing to the ground from due to Constance's Magic and Hapi's summoned monsters.

Soon everyone regroup with each other.

"Well, things is going a lot smoother." Joker comment.

"With this many allies, I'm not surprised." Blake said with a grin on her face. "Especially powerful ones."

"Hehe. It's gotten a lot more fun." Noir giggled.

"At any rate. Let's be off." Queen said as they hopped into the next warp pipe found themselves inside the third floor of the castle where they found another switch as they quickly activated them to open up a door.

"Does anyone else notice there are A LOT of switches?" Oracle asked.

"Yeah... Probabaly to make things earlier for them." Alisa said.

"Or that they have their technology." Tager said as they went inside the door… and when they went inside, they found Peach pacing around worriedly on a screen.

(BGM ended)

"Peach!" Mario exclaimed, but Peach didn't hear him.

"Hang on, it's probably a communication thing. This will only take a moment." Alisa said and lay on her back to get the wiring figured out.

"Need some help?" Oracle asked.

"Nah, I think I got it." Alisa said, and they then heard a buzzing. "Got it!"

"Oh good!" Rean said.

"Huh? That voice!" A voice said as Peach turned around. "Rean? Is that you?"

"And all of us!" Sara grinned.

"Sara! Oh thank goodness! Look, I can't see you but I can hear you. Listen, I'm in the very top of the statue and-"

Suddenly she was cut off as it went to static.

"Ah! Oh no!" Alisa exlciamed,

"Hang on." Ragna punched the monitor but it didn't do anything. "Damn it, that didn't work."

"Princess Shroob must have cut off all communications." Oracle said

"Well, now what are we gonna do?" Luigi asked.

"Get her back!" Mario said and turned his head to see a Warp Pipe. "And I think I know where to get her out of there."

"Let's just hope things will be easier for us." Paimon sighed as they all enter the warp pipe soon they all arrive underground.

"Looks like we're underground. No... the celler." Kazuha said.

"Aww, why did it had to be the cellar..." Paimon frowned.

"Let's take the short cut." Aether aid and stomp his feet and created a path. "There!"

"Let's roll!" Bowser smirked and then they found the Warp Pipe nearby as they walked over and hopped in, where they found themselves in a different part of Shroob Castle, just near the statue.

"Let's go, Peach is waiting for us!" Mario said as they took off, ready to save Peach and to stop Princess Shroob once and for all.

And the final Battle awaits everyone! Princess Shroob will meet her downfall! Along with another...