Disclaimer: I do not own any of the material appearing in this story.
BGM: Rosalina in the Observatory 2 (Super Mario Galaxy)
Mario and Marisa landed on the ground with the Grand Star, where it flew off into the core and glowed green, where the Kitchen dome then opened up for everyone. "Booyah!" Marisa said, high fiving Mario.
"You look like you've been through a fight." Nitori said.
"Yeah, that Bowser guy is a hell of a puncher, I'll give him that." Marisa chuckled, rolling her shoulder. "Nothing I can't handle, though!"
"Hmm, where's Luigi? I thought he and Yuyuko would've been back by now." Mario said.
"That might be a problem." Rosalina said, catching their attention as she aimed her wand at the screen and it lit up, revealing Luigi and Yuyuko's location, along with a machine trying to destroy the both of them.
"Wait a minute, I recognize that metal!" Polari exclaimed. "That's from Dreadnought Galaxy! They just painted it yellow and put it together to make a deadly robot!"
"Indeed." Rosalina nodded. "Yuyuko and Luigi are having a hard time fighting that thing."
"Oh, just throw a bomb at that thing, It'll work out." Marisa said.
"Hmm, wonder if I could use some of that metal." Nitori mused.
"We oughta go help them." Sakuya suggested.
"There's no need." Rosalina responded, to which everyone but Polari gave her a weird look. "For you see, we picked up on someone else entering the galaxy." She said, pulling out of the base of the Battlerock and they zoomed in on a ship that was flying in.
"Who's that? Friend or foe?" Marisa wondered.
Mario chuckled. "That would be a friend." He said.
End BGM
In Battlerock…
"Butterfly Delusion!" Yuyuko yelled, unleashing her danmaku on the robot, but it didn't damage the robot at all as it swiped its drill at the two, but Luigi jumped high in the air and threw fireballs, but that did absolutely nothing to it before it started sucking Luigi in.
"WAAAAH!" Luigi yelled.
"Luigi!" Yuyuko yelled, before Luigi was spat out and slammed into her. "Ooof!" She grunted as the two of them were knocked back as the robot raised its drill arm up to crush the two… until two missiles hit the head of the robot to knock it back a bit.
"Diggernaut. We meet again." A female voice said.
BGM: Theme of Samus Aran, Space Warrior (Super Smash Bros Brawl/Wii U/Ultimate)
A woman walked over to them, wearing orange and red armor with an arm cannon and looking quite slender, and joining her was a small squishy-looking green alien thing that chirped and had two yellow rodents join her. One of them was smaller than the other.
Her name? Samus Aran.
"Nnngh, Samus?" Luigi asked in surprise. "What are you doing here?"
"I'd ask you the same thing, but that's not important right now. Stand back, we'll take care of this."
"What are those things?" Yuyuko curiously wondered.
"I don't know who that guy is, but activate the missiles on this thing!" A Rocky Wrench yelled. "…We did install missiles, right?"
"You don't know Samus?! Oh, we're gonna be in for a bad time." Another Rocky Wrench groaned, while another was already signing his will.
"Ready, you two?"
"Pika!"
"Pichu!"
Samus aimed her arm cannon at Diggernaut. "Let's rock."
End BGM
BGM: Boss - Diggernaut (Metroid: Samus Returns)
Diggernaut quickly used his drills to attack the trio, but Samus quickly rolled out of the way while the two creatures avoided the attacks, while the smaller one, Pichu, unleashed a charged Skull Bash and smacked it against the eye, not doing too much damage but it did catch its attention as it tried to squish Pichu, but with his small size, he avoided the drills as Samus ran over and fired a barrage of Super Missiles on the eye.
Diggernaut glared at Samus and tried to suck her in, but Samus quickly rolled herself into a ball and activated the Spider Ball, while also letting out a few bombs for it to suck in before she got back up and ran toward him, picking up speed and then Shinesparked into him to knock him back before jumping back and charged up her Arm Cannon before firing a huge ball of energy toward him and hit him.
"PIKA…CHUUUUUUUU!" Pikachu yelled, unleashing a Thunderbolt on the eye to knock it back before it swung its arms wildly where Samus quickly dodged the drills gracefully while the two Pokemon had a little trouble but they didn't get hurt that much as Diggernaut leaned in and fired lasers at the trio, but Samus rolled out of the way and switched to the Spazer Laser and quickly shot through the head while Pikachu jumped up and launched an Electro Ball at him.
"Pi…CHUUUUUUUU!" Pichu yelled, unleashing a Thunderbolt to knock Diggernaut back, but Pikachu shook Pichu out of it so it wouldn't KO itself. "Pichu Pi!"
"Pika!" Pikachu nodded as Samus quickly rolled into one of the drills and planted a bomb inside it before hopping out, dealing severe damage to it while Pikachu ran inside the other one and used a Thunderbolt to overcharge the drill to destroy it.
"Quick, launch the missiles!" A Rocky Wrench ordered.
"It doesn't have any missiles, we didn't put any of it in yet!"
"WHAT! WHAT KIND OF ROCKY WRENCH ARE YOU?!"
Diggernaut attempted to use its destroyed drills to crush the three, but they quickly avoided the drills and then fired its lasers at them, but the two Pokemon jumped back while Samus jumped in the air and fired Super Missiles at it, but while she was in the air, Diggernaut swung its drill at her to knock her into a wall and pinned her there, but Samus wasn't having any of it as she used her strength to push it out with her legs before she dropped to the ground.
"Alright, you just made me mad." She said, aiming her arm cannon at him and charged up her laser, before firing her Zero Laser at him as it tried to fire a huge laser back at her, both of them colliding, but with how weak Diggernaut was, the Zero Laser quickly overpowered it and engulfed the Diggernaut before it fell to the ground in defeat, but she wasn't done with it yet as she ran over to it, climbed on top of it, and rolled inside before planting a Power Bomb inside it and then quickly got out and ran for cover, using debris to cover the Pokemon, Metroid, Luigi and Yuyuko from the explosion that just happened… while the Rocky Wrenches weren't so lucky.
End BGM
"Everyone alright?" Samus asked.
"Yeah, we're okay." Luigi gave her the thumbs up.
"Good." Samus nodded and then a Power Star came flying down to them, where Yuyuko took it.
"I want to see more of this place." Yuyuko said, and then the alarm sounded and the place glowed red, and debris started falling.
"Not going to happen. Let's move!" Samus ordered as they quickly ran off into Samus' gunship and took off, with the Power Star suddenly taking control of the ship and flying off to the Observatory, with Battlerock Galaxy unleashing a huge explosion.
Back at the Observatory…
BGM: Rosalina in the Observatory 2
"Who was that?" Nitori asked.
"That was Samus Aran, a galactic bounty hunter." Mario replied, and right on cue, Samus' ship landed in the garage and then Luigi and Yuyuko walked out.
"Hello~!" Yuyuko greeted while Samus walked out with Pikachu, Pichu and the Metroid.
"Mario? You're here too?" Samus asked in surprise. "…Wait, how is everyone breathing in space?"
"The Observatory provides its own oxygen." Rosalina replied. "And luckily, these galaxies have oxygen as well."
"I see." Samus mused and then deactivated her armor, much to everyone but the Bros and Toad Brigade's surprise.
"DUDE, YOU'RE A CHICK?!" Marisa yelled.
Samus sweatdropped. "As if my voice didn't tip you off?"
"I suspected that she was a woman, I didn't really want to say anything." Yuyuko shrugged.
"What are these little guys?" Nitori wondered, kneeling over to Pikachu and Pichu while Sakuya looked over the Metroid.
"These little guys are Pokemon, the electric types known as Pikachu and Pichu." Samus explained.
"Pika!" Pikachu waved.
"Chu!" Pichu waved too.
"Of course, the Bros and Toad Brigade know about this, but I'll explain anyway. Like with the Bros, I am part of group known as Super Smash Bros, and I am actually one of the original twelve along with Pikachu, Mario and Luigi. We have had many tournaments. The original, Melee, Brawl, the 4th, and one that is currently ongoing: Ultimate. We're still missing one that was invited for the 4th one so we're hoping they can make it. Master Hand had sent out five special invites across the universe in hopes to gain more Smashers. One has already made their mark and is preparing to come to Smash Bros, calls himself Joker."
"Uh-huh, so what's this gotta do these two?" Marisa asked.
"I'm getting there." Samus told her. "During the Brawl tournament, we were rudely interrupted by the Subspace Emissary incident. During my investigation on a mysterious island, I had noticed the Subspace Army torturing Pikachu, so I quickly set him free. To my surprise, he grew an attachment to me. I had acknowledged Pikachu before, but he stuck to me for the longest time to the point where he wouldn't leave me to sleep by myself. Long story short, I adopted this little guy as my own and I've never regretted it."
"Pika!" Pikachu grinned.
"The Metroid is actually a baby Metroid I spared during my mission to eradicate them all. Metroids are parasites that feed on anything around them, so I was sent in to destroy them before it got out of hand. However, this little Metroid hatched and I was going to destroy it, but, I realized how helpless it was while I realized that I was the monster that destroyed its kind. It did not help that the Metroid thought of me as its mother. So I took him in, unfortunately it was kidnapped and then destroyed by Mother Brain when it sacrificed itself to save me, which unfortunately put me in a melancholic mood that shouldn't have hit me as hard as it should have. During the Brawl tournament, however, the beings known as Master Hand and Crazy Hand introduced an item known as the Assist Trophies, and to my surprise, the baby Metroid was one of them. It instantly recognized me and had tackled me into a hug."
"Aww, that's so sweet." Alice smiled.
"This story gets me every stinkin' time." Captain Toad sobbed a bit.
"Ever since that day, this little guy never leaves my side." Samus said, smiling at the Metroid to where it did a cute chirp in response. "Now, as for Pichu, the three of us were on a mission from a distress call that we picked up on. When we got to the planet, we saw Pichu being used for experiments. It turned out that it was kidnapped when it was a baby and was used for experimentation purposes. This did not sit well with me and I destroyed it all before destroying the boss of the operations himself. Pichu, like the Metroid, grew attached to me after I saved it and hasn't left me ever since. Such a little fighter too, it can kick some serious butt in the Ultimate Tournament."
"So, this isn't the same Pichu from Melee?" Green Toad wondered.
"That Pichu evolved into this Pikachu right here. The original Pikachu had somehow ran off and never returned, though I have heard rumors of that same Pikachu kicking butt in a so-called Pokken Tournament." Samus mused. "Could just be another Pikachu for all I know."
"Wow, that's pretty cool." Marisa said.
"So, you plan on staying with us?" Polari asked.
"I tend to avoid the whole conflict with Mario and Bowser and let them settle their differences, but since I inadvertently got dragged into this by dumb luck, I might stick around. Just one question. What the heck is going on here?" Samus asked and then the situation was explained to her. "That figures. Alright, let's get those Power Stars."
"Right!" Mario nodded and they headed off to find more Power Stars.
End BGM
Back at Ghostly Galaxy…
BGM: Waltz of the Boos (Super Mario Galaxy)
Several Boos dragged Youmu to a cell, ready to lock her up, but before they did, Myon came flying out from behind her and attacked the Boos, not letting them harm her and then poked her to wake her up. "Mmm… what?" Youmu woke up and saw Myon in front of her. "Oh, hey Myon." She said and sat up, where she noticed the Boos still coming after her. "Uh oh!" Youmu paled and pulled out one of her swords, her legs shaking as Myon noticed something and flew off. "Oh, don't leave me!"
Myon came across a white Mushroom and picked it up before coming back, and then throwing it over to Youmu who saw it in the corner of her eye and grabbed it, then saw the Mushroom had a scary look on its front, causing her to sweatdrop. "Alright… I trust you." She said and absorbed the Boo Mushroom.
Youmu's eyes turned red, her skin turned whispy, her hair had black highlights, her dress had grown to her calves while her feet disappeared. Her swords floated behind her while Myon remained unchanged. A tiara appeared on top of her head. "Huh?" Youmu wondered as she looked at herself. "What happened to me?" She wondered as a Boo pulled out a mirror and handed it to her. "AAAAAAH!" She yelled and hit a wall when backing up. "…Wait… is that me?" She asked and took a closer look. "It is me!" She exclaimed and then looked at all the Boos. "…Why do I not feel afraid of you all of a sudden?" She wondered as the Boos circled around her while smiling, seeming to have suddenly taken a liking to her.
"Um… see you later." Youmu said and flew around the mansion, unaware of the Boos following her, which Myon had noticed and poked Youmu on the shoulder. "Huh?" She turned toward them. "Why are you guys following me?"
"Oh, it's because we are in the presence of a ghostly queen! We can't help but be infatuated with you, following your every command!" A Boo said, while Youmu sweatdropped.
"I'm not a queen, though. I'm half-human, half-phantom." Youmu pointed out.
"Buuuut, you ate the Boo Mushroom and are wearing a tiara. You are royalty!"
Oh, this is gonna get annoying. Youmu thought as she flew around while the Boos followed her around. "Mmph… go away!" She yelled before she had an idea and turned herself invisible.
"Ack! Where'd the queen go?!"
"Good riddance." Youmu smirked as she flew into a room and then saw a Power Star. "Oh?" She wondered and flew over to investigate it before she took it. "Hmm, I wonder if there any other shiny Star objects around here?" She wondered and then went outside by turning herself invisible again, where she wandered around the galaxy and saw a lone planet with what it looked like an obstacle course in front of her. "What's this?" She asked and then flew over to investigate.
"Hmm, hello. Another spooky spirit?" A voice asked as Youmu turned to see the Spooky Speedster flying to her.
"Oh great, another one. Listen pal, I'm not-"
"I know you're not royalty." The Spooky Speedster said. "The only ghostly royalty I know of are King Boo and his fair and lovely maiden, Queen Boo. Last I checked, there aren't any Princess Boos yet."
"Who?"
"You never heard of King Boo? That's surprising! Every undead being knows who he is, and those who are mortal also know who he is, including a man in green."
"Nope."
"Hmm, curious. Well, if you must know, King Boo used to be a fair king and he was a friendly guy. Key words: Used to. For some strange reason, there was one day where he absolutely snapped and turned incredibly evil, and I think I know what happened. That nefarious King Bowser came to Boo Land and asked him to ally with him. His advisors strongly advised against the idea, but King Boo persisted and agreed to ally with King Boo. Everything was fine one day, but his personality started changing and then he went mad with power. I should point out that back then, King Boo wasn't the wisest out there, but he still made good decisions until that dreadful day. Unfortunately, many Boos followed the crazy king and those who didn't were branded as traitors and banished from the land. I was one of those Boos… and so was his wife. However, Queen Boo wasn't one of the lucky ones and was made an example. What he did to her… well, I'll let you use your imagination on what he did to her."
"Oh my!" Youmu whispered.
"Indeed. We traitorous Boos mourned for her while we fled. The Boos that followed him didn't even make a fuss. Boos were stationed throughout the universe. We traitors went into either hiding or allied with the Mushroom Kingdom. As for me, I became a wandering Boo that would quickly fly away if any of the Boos spotted me. However, I am known as the Spooky Speedster and I am the fastest of the Boos. None can catch me."
"I am so sorry…"
"Do not mourn for us. It is meaningless to mourn over a wicked king who made an example out of his own wife. I long for the day when King Boo snaps out of it, but I honestly do not see it happening."
"Wish there was something I can do."
"Don't worry about it. Let us race for now. You want that Power Star up ahead? Let us see who is the fastest, me or you."
Youmu nodded. "Got it." She said as the two got into position and took off to the other planet, with Spooky Speedster gaining the lead with Youmu close behind him, but then her eyes glowed and picked up speed where she darted through the course and made it to the finish line before Spooky Speedster got there.
"Not bad! Not bad at all." He said and handed her the Power Star. "I believe this is yours."
"Thank you." Youmu said and then flew off to wander the galaxy a little more until she came across a planet that had a few platforms leading to an arena-like platform below as she flew down to investigate, but as she did… rocks formed in front of her to form a rock monster. Bouldergeist.
End BGM
BGM: Mystic Oriental Dream ~ Ancient Temple (Touhou 9: Phantasmagoria of Flower View)
"Bring it." Youmu said as Bouldergeist launched boulders at him, but she quickly flew around and had her swords float in front of her as she quickly slashed through the boulders with ease as a Bomb Boo appeared before her, but Myon turned around and tackled the Bomb Boo. "Constancy of the Conventional Truth!" She yelled, firing danmaku at him, and with the Boo Mushroom absorbed, it made her danmaku turn invisible, only to come back as visible in a split second in front of Bouldergeist, to which it chipped some of the rocks off of him but it didn't seem to phase him as a row of rock spires rose from the ground to try and stab her, but she slashed through the rock spires with ease and then blocked an incoming boulder.
"Slash of Nether Meditation!" She yelled, slashing through Bouldergeist as the rocks broke and revealed his true form as a shadow ghost and tried to run away as a few Bomb Boos tried to aid him, but Youmu slashed through the Bomb Boos and then quickly slashed through the uvula, which angered the ghost and reformed, this time forming hands as he punched the Spirit, but she blocked with her swords, as the two of them clashed with the sword and fist, as he summoned two rows of rock spires to hit her, but she slashed through them and then slashed through the boulders that was sent to her, then she used a cross slash at a rock fist, shattering the rock.
During this battle, Luigi had landed on the ground after getting a Star from the Matter Splatter Mansion, and then heard the commotion going on from where he was. "What the?" He wondered and went to investigate.
"Slash from Departure of Hesitation!" Youmu yelled, hitting Bouldergeist and shattered some of his armor as he tried to fight back but Myon had transformed into a second Youmu and slashed through the rock fist to shatter it. "HAAAAAAAAAH!" She yelled, unleashing her Spell Card again and shattering Bouldergeist's rock armor to pieces, and then the shadow spirit tried to flee, but Youmu quickly slashed through him, where Bouldergeist screamed in pain before exploding and turning into a Power Star.
End BGM
"That's another one of these mysterious things." Youmu said as she took it and put it in her pocket while Myon turned to normal and they both looked off into the distance. "I wonder what else this place has in store." She wondered. "I wonder if we'll meet up with Lady Yuyuko." She said as Luigi just landed, not hearing "Yuyuko".
A ghost! Luigi thought and took out his Poltergust, slowly sneaking up behind her with a smirk.
"Hmm?" Youmu turned her head to see Luigi. "Oh, hello."
"FREEZE!" Luigi yelled, shining his flashlight at Youmu.
"ACK! Dude, who points a flashlight at someone?!" She yelled, but then she felt herself being pulled in by the Poltergust. "ACK! WAIT! I'M NOT A GHOST, I SWEAR!"
"That's what they all say!"
"WAIT! WAAAAAAAAAAIT!" Youmu screamed as Myon tried to hold on to her, but unfortunately, she and Myon got sucked into the vortex. "Mmph! MMMMPH!" She yelled while the Poltergust spat out three Power Stars.
"Oooh, nice!" Luigi grinned and then took off back to the Observatory, while Youmu was desperately screaming to get out, but to no avail.
The Boos for some reason become infatuated with Boo Mario, so I thought adding a tiara on Boo Youmu would've been funny.
I also couldn't get the idea of Luigi sucking Youmu in his Poltergust out of my head, so hey, a funny ending to a chapter, no?