Disclaimer: I do not own any of the material appearing in this story.

BGM: Forever Forest (Paper Mario)

"Mama mia… this place is creepy!" Luigi said, shivering.

"I've been through Forever Forest, this place is nothing." Nyx said as they walked around the heavily forested area.

"Does anyone have a map?" Ruby wondered as they looked around the area until they came across some sort of clearing, completely infested with happy-go-lucky Wigglers. Yoshi's eyes immediately changed into hearts, looking at all the tasty meals in front of him.

World 5-1: Wiggler Paradise

"Oh great…" Weiss sighed.

"What's wrong?" Mario asked.

"Let's just say she pissed one off when we were coming to rescue you." Yang explained.

"How was I supposed to know they aren't as docile as they look?!" Weiss sighed, and then watching Yoshi gobble up some Wigglers as some of them quickly booked it out of there, but unfortunately for them, they couldn't outspeed Yoshi's tongue. "He looks like he's in heaven."

"Wigglers are his favorite snack." Mario explained. "And Shy Guys."

"And basically anything that's edible. He even ate me once during a tennis tournament." Luigi shuddered.

"Oh come on, you were fine!" Mario said.

"Yeah, but coming out of an egg wasn't exactly pleasant!" Luigi sighed as they kept going, as Yoshi went to down on the enemies, and even throwing a few eggs on some Ursa to knock them down. And when they got back up, they were quickly dispatched by the others and kept going.

"What was it like being inside a dinosaur?" Sister asked.

"…Let's just say I know what it's like to be one of the enemies to be eaten…"

"Oh! I can't wait to be eaten by Yoshi if that's the case!" Sister grinned, as Yoshi gave her a weird look.

"Yoshi Yo?" He asked as they kept going as they noticed an alternate path up ahead.

"Hey, why don't we go this way?" Jaune asked. "I bet this particular path leads us nowhere."

"The sooner out of this forest, the better." Grif said.

"I agree!" Luigi nodded as the three went towards the alternate path.

"…I guess we're going that way." Mario said as they followed the others, but as they kept walking… they noticed a Ghost House up ahead.

End BGM

"…You just HAAAAAD to suggest it, didn't you?!" Grif asked.

"Hey, it was either that or going absolutely nowhere!" Jaune protested, as they heard Booniper cackling a little.

"That's enough from the peanut gallery!" Grif shouted.

"Oh please, how bad can this Ghost House be?" Tucker asked.

"…Don't even go there…" Luigi groaned as they wandered into the ghost house.

BGM: Waltz of the Boos (Super Mario Galaxy)

"You know, it could be worse." Nora piped up.

"What makes you say that?" Luigi asked.

"We could be in a huge haunted mansion." Nora said. "Or worse… five haunted mansions!"

Luigi paled. "I don't even wanna go in any of them!" He said.

"I wonder if they made a movie out of a haunted mansion." Caboose wondered as they wandered around, dodging the Boos, Big Boos and the Eeries.

"I've about had it with these ghosts. Can't we just… suck them up with a vacuum or something?" Church asked.

"How can a vacuum hold a ghost if they can just simply fly out of it?" Grif asked.

"Haven't you ever seen Ghost Busters?"

"Yes, and it sucked!"

"The original, or that shitty reboot?"

"...The reboot..."

"Goddammit!" Church exclaimed as they walked around, looking everywhere for an exit while dodging the Eeries and Boos as Booniper actually smacked a fellow Boo as it was getting close to Jaune. The Boo looked at Booniper in surprise before they soon found the exit and headed out of the ghost house and continued forward deeper into the forest.

End BGM

BGM: Forever Forest

World 5-3: Fishing Lakitus

"Ai yai yai, there's gotta be a way out of this forest!" Neptune complained.

"It's not too bad, but you do easily get lost here." Mario said.

"Well, here's hoping it won't get worse." Ruby hoped as they saw a Lakitu snoring on his cloud with a fishing pole with a 1-Up Mushroom on the hook.

"I hope no one falls for that…" Weiss said as they went forward, dodging the Koopas and Lakitus throwing Spinies at them, and then Ruby spotted something on the ground, which was a simple chocolate chip cookie.

"…Must… not… fall for that…!" Ruby said as she tried to resist the cookie, but her legs refused to listen to her and she grabbed the cookie. "Eh, one bite wouldn't hurt!" She said as she chomped down on it, and was reeled in.

"Wow, I didn't think I'd get one!" A Lakitu said. "Oh, and it's a big one!" He grinned and then pulled up Ruby. "…You're not the Mario Bros!" He said. "Man, I wasted a stupid cookie on this?!"

Ruby growled. "That cookie wasn't stupid!" She exclaimed, summoning her Rose Palm and fired a charged shot that sent him flying off his cloud.

"AAAAAAAAH!" He yelled as he landed on another fishing pole with a coin, as he was then pulled up by another fishing Lakitu.

"…Jerry? What the heck are you doing?"

"You DON'T want to know…"

Ruby happily chomped down on the rest of the cookie and hopped down to meet up with the others, as Weiss sighed, knowing what Ruby did. "You and Pit are quite the pair…"

"What makes you say that?" She asked.

"Oh come on. You are attracted to cookies, he's attracted to any food, it's no wonder you two are a couple." Weiss said as Ruby giggled.

"Who names their kid 'Pit'? It's the dumbest name I ever heard. I doubt he even exists." Grif said, hearing casual whistling from the Mario Bros, RWBY, JNPR, and Yoshi. "Hmph, what does he look like anyway?"

"An angel." Ruby said.

"…You're making that up. There's no such thing as an angel!"

"Says the guy who believes there's a thing called a puma." Sarge said.

"A puma is an actual animal!"

"What did I tell you about making up animals, private?!" Sarge growled.

Ruby giggled. "One of these days, I'll introduce you to him."

"Ugh. Great, an imaginary boyfriend meeting me. That's rich!" Grif laughed as they walked forward, taking out more enemies and more Lakitus as they spotted a sign that said "This way to the castle!"

"Oh heck yeah! We're this close to getting out of here!" Luigi exclaimed.

"Or it will be a trap." Blake muttered as they walked past the sign, where the writing fell off to reveal 'This way to a dead end!' and then Kamek appeared.

"Eheehee! This is too easy!" Kamek cackled. "Have fun!" He laughed and then sighed. "…Now how do I get out of this forest…?" He wondered as he teleported… only to smack into a tree. "OOOF!" He fell over, knocked out. "Not… that… way…" He groaned.

World 5-Tower – A Powerhouse Koopa

BGM: Tower (New Super Mario Bros 2)

"You sure this is a castle? Looks more like a simple tower to me." Neptune said.

"I feel like we've been tricked." Ren said.

"We probably were." Blake said.

"Well, we're here, we might as well go inside." Yang said as they walked into the tower, where they were immediately greeted by buzzsaws and pillars smashing the ground.

"…You have GOT to be kidding me." Grif groaned.

"Welp, privates first!" Sarge pushed Grif.

"Oh no, not this again!" Grif said as he turned around, this time pushing Sarge. "Sarges first!"

"No no no, I insist!" Sarge was pushing Grif again.

"Nuh-uh! You do it!"

"No, you!"

"You!"

"YOU!"

"Uh, guys?" Weiss got their attention as they turned to see Caboose casually walking forward. "I think Caboose is going first."

"Caboose, you idiot! Get back here!" Church exclaimed, before thinking it over. "Forget what I said! Keep on going!"

"Church!" Ruby scolded.

"Alright, alright! I'll go too!" He growled as he went after them with the others following, being careful not to be squished or cut in pieces where they eventually made it to the other room, with buzz saws attempting to mow them down. Luckily, they dodged them and avoided some Podoboos in the process, and then they made it to the far side of the room, with Poochy helping them get across the lava, not that he didn't mind making several trips.

"Alright, let's-a go!" Mario said as they walked into the door.

End BGM

"So, who are we facing this time?" Luigi wondered.

"Me." A voice said as the lights came on to see a huge Koopa with humongously huge arms.

"Boom Boom?!" Mario and Luigi exclaimed.

"…That's an unfortunate name." Tucker said.

"Yep…" Yang nodded.

Boom Boom growled. "I'll show you unfortunate!" He said and the battle began.

BGM: Boom Boom (Super Mario 3D Land/World)

Boom Boom began to spin his arms around like a helicopter as he tried to mow them down, but they quickly rolled out of the way as they began hitting him back as best they could with their weapons until eventually, Boom Boom got dizzy and groaned, and then both Mario and Luigi landed on top of him.

"Ooof!" He growled as he did the same thing again, but this time he proceeded to jump a few times to add more momentum, proceeding to land on Jaune, Church, Sun and Neptune, but Nyx quickly shot him with her crossbow to make him lose momentum. Ruby and Weiss did the same, until he was slow enough for Nora to jump up and hammer his head to the ground.

"Alright… that's it!" Boom Boom exclaimed as he got back up and proceeded to flail his arms around, attempting to clobber them, but Weiss stabbed the ground with her sword, turning it into ice where Boom Boom slipped and landed on his back, proceeding to slide around until he came to a gentle stop. Until Mario and Luigi hammered him repeatedly and send him around the room again, and when he got to Nora, she proceeded to hammer him out of the tower.

End BGM

"That was pathetic." Yang said as they got out of the tower.

"Not to mention a waste of time." Church said.

"I'm sure we'll find that castle." Nyx said as they walked off, all of them unaware, from a few rows of trees over, the castle was right there.

Meanwhile…

"You sure you know where we're going?" Green asked.

"Of course! That shady Shy Guy gave us this map, didn't he?" Red asked.

"Well, yeah, but I don't know how I feel given the fact the map is owned by someone named Anti-Guy…"

"Relax, I'm sure we'll get out of this forest." Yellow said and right on cue, Boom Boom landed on a few trees until he landed just right in front of them.

"…Phew!" Black wiped his forehead… and then a tree fell and landed right on top of them, causing them all to scream.

"I swear, this island is bad luck!" Yellow groaned, unaware that just a few feet over, the gang walked by them, unaware of the Koopa Bros presence.

"We'll get out of this predicament… soon! I hope!" Red hoped. "…Now if only this tree wasn't heavy!"

"Red?" Green got his attention.

"Yes?"

"Are we gonna be here for a while?"

"We're gonna be here for a while." Red sighed.

I already did Reznor, so why not give Boom Boom the spotlight?