Flipside (Super Paper Mario)

"Whoa, nice tower." Slim said as they got out.

"Very interesting." Boomer nodded.

"Ah, you're back." Merlon said. "I assume you got the Pure Heart from Merlee?"

"Sure did." Mario nodded, revealing the Pure Heart to him...and suddenly the whole place rumbled. "What the heck?"

"Guys?" Lightning got their attention as they saw the void getting bigger.

"Oh boy..." Kairi said.

"Oh, we're running out of time. Quickly, you must find the Heart Pillar and get to the next world as soon as possible." Merlon said as they nodded as he walked away. "Oh...and by the way." He said. "I found something interesting when I was reading the Light Prognosticus. If the prophecy is true...then a man in green will attempt to destroy the heroes and the worlds."

"Is it the same guy in this green tunic?" Sora asked.

"No...it's a different hero." Merlon replied and then walked away.

Mario folded his arms and thought about it. ...No, Luigi wouldn't do something like that. He thought.

After finding the Heart Pillar and getting back to the door...

"Alright, let's go." Sora said as they nodded and walked in.

World 3-1: 8-Bit Madness

Bitlands (Super Paper Mario)

They walked out of the door as they looked around. "Is everything 8-bit here?" Sora asked.

"I guess so." Mario said. "Weird, we're not 8-Bit..."

"That's kinda weird." Peach said.

"Hmm...it's nearby." Tippi said. "It's weird...I can feel it but where could it be?" She wondered. "I think we need to have a close eye on it just in ca-" A tongue grabbed her. "AAAAH!" She yelled.

"TIPPI!" Mario yelled as they saw a lizard geek thing appeared in front of them.

Villains of a Sort (Kingdom Hearts)

"Oh ho ho! This is a neat butterfly I have in my hands!" He exclaimed.

"Hey, give her back!" Sora ordered.

"Sorry! But this butterfly is MINE!" He smirked. "I gotta tell my other friends about this...and FAST! I am NOT going to miss the next episode of One Piece!" He exclaimed and then took off.

"...What just happened?" Lightning asked.

"Your friend got kidnapped, that's what happened." A voice said as they looked to see a pixl coming out of the bushes.

Strange Company (Super Paper Mario)

"Well we need to go after him." Kairi said.

"Ha! Good luck. Whenever Francis sees something and wants it...there's no getting it back. He's the most geekiest and nerdiest chameleon I've ever met."

"Well why don't you come with us? We can take care of him together." Peach offered.

"I'll come with you after you dealt with Francis and rescued your friend...in the meantime, I'll chill back here." He said and disappeared into the bushes.

Bitlands

"Well that was interesting..." Peach said. "Well, we need to save Tippi as soon as possible."

"Right." Sora nodded as they quickly ran off.

A few minutes later...

"...I think we're lost." Kairi said.

"Yeah." Sora nodded.

"Well now what?" Lightning asked.

"Hmm..." Mario folded his arms and spotted three people not too far off. "Hey...we can ask them where that Francis guy is."

"Yeah." Sora nodded as they ran to them...but on close inspection, it was two characters...and a dog and a duck.

"Mama mia!" Mario exclaimed.

They turned around after talking to each other about wondering where they are. "Mario?"

"Link, Samus!" Mario exclaimed in surprise and looked down. "And Duck Hunt!"

"Hey!" Peach smiled. "Nice to see you guys here!"

"It's nice to see you again." Samus said and then looked at them. "But who are the others?"

One brief introduction later and an explanation...

"So that's how you got here? You just teleported out of thin air?" Mario asked.

"Yeah, I tried to play my Ocarina to send me to the Temple of Time, but it wasn't working." Link said.

"My ship isn't coming any time soon..." Samus muttered while Duck Hunt just scratched his ear.

"Hmm..." Link folded his arms. "This Count Bleck guy...he sounds evil but why would he want to destroy the worlds?"

"I dunno." Sora shrugged.

"Well, I guess we have no choice but to take him down." Link said as they nodded.

"One problem, we're lost." Kairi said.

"So are we." Samus said.

"Well, this might take a while." Link muttered.

More traveling around later...

"I think I see something up ahead..." Sora said, but then they saw a Koopa freaking out and running straight to a ? block. "What's his problem?"

"I dunno, but he's using a ? block." Mario said. "That's new." He said as they spotted the Mega Star coming out as he grabbed it and turned into a gigantic 8 bit Koopa. "Oh no..."

"WHAT THE HECK?!" Kairi and Peach screamed.

Immediately, Link and Samus were firing arrows and shots at the gigantic turtle while Duck Hunt was throwing Clay Pigeons at the Koopa, but it shrugged it off until they heard rumbling as they saw an 8-bit Mario coming right for the Koopa. "What the heck is going on here?" He wondered.

"I have no clue..." Samus said as Mario and the Koopa started beating each other up until Mario jumped up and ground pounded on the Koopa, immediately killing it and causing an earthquake that sent everyone to the ground, toppling trees over and causing an avalanche from a nearby mountain, and then Mario went back to normal.

"I have never seen Mario like that..." Peach said.

"Man, what does he have in those pockets of his?" Link wondered as they kept on going.

As they did, they eventually came across a fort of some kind. "Hmm, I think we're almost out of here..." Kairi said.

"HEY!" A voice yelled as they looked to see a Hammer Bro staring right at him. "You better leave right now or else we're gonna make you pay!"

"Yep, we're close to getting out of here." Samus said. "There's always something important when you encounter resistance."

"No kidding." Link said, unsheathing his sword while Duck Hunt growled at them.

"Alright, you asked for it." Hammer Bro smirked. "KOOPA TROOP! ATTACK!" He ordered as everyone came out of the castle.

Rowdy Rumble (Kingdom Hearts II)

Mario jumped up and punched the Hammer Bro down while the others joined him as Duck Hunt kicked an exploding can at some Goombas, knocking them away from the explosion as Samus kicked a Koopa straight into a Bill Blaster. "H-HEY! GET ME OUT OF HERE!" A Koopa yelled as a Hammer Bro and Boomerang Bro tried to get him out, but the Bill Blaster exploded, taking them all down.

"Nice shot." Link said.

"Thanks." Samus said, as she fired a missile as it knocked a Shy Guy down as they kept attacking until they saw a huge castle in front of them...with a huge X right there.

"Oh! Let me handle it!" Boomer exclaimed as he lit up and exploded, destroying the castle. "OH YEAH! THAT'S HOW IT'S DONE!"

"WHOOOOOA!" A voice yelled as Bowser landed on the ground. "Ow..." He groaned.

Bowser (Super Mario 64)

"Well that doesn't surprise me..." Mario muttered.

"My achin'..." Bowser got up and saw them. "Oh GREAT, it's the heroes..." He muttered, and then spotted Link, Samus and Duck Hunt. "You guys TOO?!"

"Don't look at us...we don't know how we got here either." Link shrugged.

Bowser then spotted Peach. "Oh! It's my lovely wife, Peach!"

"WIFE?!" Everyone but Kairi yelled. The sudden news made Duck Hunt faint...or play dead as they usually call it.

"H-HOW DID THIS HAPPEN?!" Mario yelled.

"It was a fake wedding." Peach replied.

"Oh come now, my dear. You're just messing with me." Bowser smiled.

"...I've heard enough." Mario said as he glared at Bowser.

"Always getting in my way..." Bowser growled. "Fine, it's just gonna be ME and you, just like always."

"Fine by me." Mario said as Link and Samus was pulling Duck Hunt away from the situation.

Never Let Up! (Mario and Luigi: Dream Team)

Mario and Bowser both ran straight for each other as Bowser punched Mario to the ground, but Mario jumped up and punched him in the face, as he retaliated by clawing him and kicking him to a tree.

Mario got up as he ran straight to him as he punched him, but Bowser blocked with his fist and threw him down to the ground as he attempted to stomp on him, but Mario rolled out of the way and made it to the tail, grabbing it and then spinning him around. "HEY! LET GO OF ME!"

"If you say so." Mario smirked and then let go of him, launching him to that same tree, but this time it was knocked down as Bowser got up and rolled straight to him, but Mario jumped up and then landed, taking out a Fire Flower and throwing fireballs at him, making Bowser roar and then breathed fire at him, but Mario quickly dodged and then punched him straight into the chest.

Bowser growled as he attempted to kick him, but Mario jumped up and landed right on his head, making him yell in pain before falling to the ground in defeat. "I can never win with you..." He muttered.

Bitlands

"Hmph..." Mario folded his arms. "That's what you get for marrying Peach."

"Um...Mario, sweetie?" Peach looked at him. "It was a fake wedding just to make the Chaos Heart."

"You're telling me we're not actually married?" Bowser asked.

"Bowser...put it this way. If I were FORCED to marry you...then all the worlds would come an end because..." She pointed to the sky. "BECAUSE OF THAT!"

"Huh...never really thought of it like that." Bowser said.

"Of course you didn't..." Peach muttered. "Because of that, we can't get married for real."

Bowser clenched his fists. "Fine then...I was so looking forward to that wedding cake..." He muttered, causing Link and Mario to facepalm.

"How about coming with us?" Lightning suggested. "With your brute strength, I'm sure we can take down Count Bleck so easily."

"Hmm..." Bowser thought about it.

"Bowser, when we get home... I'll bake a cake for you." Peach said, winking at him.

"...Alright, I'm in." Bowser said and looked at his minions. "Hold down the fort, I'm going to teach this guy a lesson." He said, cracking his knuckles. "LET'S MOVE IT!" He yelled as they quickly ran off to the next area.
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When you get a review asking about who to use for Bitlands and you can't decide who to use. Why not all three of them?

By the way, Link is the hero for this. Samus and Duck Hunt will just be support when the story progresses.