BGM-Sonic Adventure 2 OST-SA2 in the Groove

Sonic: I'm Sonic. Sonic the Hedgehog! Thanks to Sally, we located the docs' evil base in the Sinister Egg Zone. Everyone from the other Freedom Fighters and GUN are helping out taking on their robot army and their phantom illusions of Spider-Man's entire rouges gallery, giving my team and Spidey enough time to infiltrate the Octo Egg. It was tough, but we managed to defeat five of the Sinister Six once again, but Tails and Knuckles got separated during the fight. Looks like it's up to us, Spidey, but first let's teach our metal clones never to steal our good looks again.

BGM End

Act 11: Double Trouble

Earth…Inside the Baxter Building

"I think I found him." The smartest man in the entire world and leader of the world famous Fantastic Four, Reed Richards has said. Mr. Fantastic sits in front of his high-tech computer, with Captain America, Iron Man, and the Human Torch standing next to him as he uses his genius to locate Spider-Man, who is lost somewhere in the multiverse.

"Are you sure, Reed?" Steve asked the stretchy genius.

"I'm quite sure, Captain, and it wasn't that difficult. Johnny gave me one of Spider-Man's Spider-Tracers that I can scan with my trans-dimensional tracker. It allows me to pinpoint the signal of it's creator anywhere across dimensions. You could say it's like a dog tracking one's scent throughout the multiverse." Richards explained to the best of his abilities to someone who is not as incredibly genius like Captain America.

"I knew it was a good idea to keep it after he used it to cheat when playing city-wide hide 'n seek." Johnny joked, smiling.

After some more keyboard pressing with his stretchy arms, Reed puts up an image of the planet and universe Spider-Man is stuck on, "He's here, in Earth-1991, at a planet called Mobius."

"Mobius? Add in a 'r' and you'll mistake it for that vampire guy Spidey fights a lot's home." Johnny joked, referring to Morbius the Living Vampire.

"Boot up whatever dimensional transporter you have, Reed, and let's bring our kid arachnid back home." Tony requested.

"It's not that simple, Tony. There seem to be a high-level cosmic interference specifically created for us to block any and all interdimensional travel to that specific universe." Richards explained after what he just scanned about that universe.

"Then that also confirms our other suspicion that Doc Ock is there and has something big in mind with the ISO-8 that he doesn't want us around yet." Stark replied.

"This doesn't look like it's coming from the ISO-8, not anymore. It evolved into readings that are 'off-the charts'. An energy source that could threaten both this universe and that other universe," Richards replies while he does he uses that stretchy big brain of his to break through the cosmic barrier between the two dimensions, "I'll keep doing what I can to break through the cosmic wall as fast as I could, because whatever the source of that power is, Spider-Man is standing right next to it."

Mobius…Onboard the Octo Egg

BGM-Sonic Mania OST-Vs. Metal Sonic

At checkpoint X that is the Antechamber, an intense battle between rivals has already commenced: Sonic the Hedgehog and the Amazing Spider-Man versus Metal Sonic and the Superior Mecha Spider-Man. The two spider rivals are battling each other rapid-fire web bullets the other can perfectly avoid thanks to their own Spider-Sense. Meanwhile, the two hedgehog rivals are speeding around the walls of the chamber to try and one up each other. Metal Sonic tries to slash his organic rival but he was too slow as Sonic briefly clashed with him and jumped to the air with a teasing smile.

"Give it up, man! I've beaten you in every race, every fight, and even that time you turned into that stupid dragon thing! You can't-AUGH!" It was then Sonic got his by a right hook to the ceiling by his copy. Sonic quickly recovers and lands on the opposite side of the room where Metal stands, and the two charge at each other at incredible high speeds. "Hehe. Cheap shot by a cheap knockoff!" Sonic grinned.

While Sonic and Metal's clash resulted in a booming explosion, the battle between spiders is just as intense. Mecha Spider-Man stands on top of a metal crate to fire an onslaught of cosmic energy blasts at his organic self. "I gotta say, you look just like me, except you're more 'angry back alley' than 'friendly neighborhood'!" Spidey joked, hiding by another metal crate to avoid his copy's attacks.

Peter decided it was time to leap high to his side and launch more web shots to see if they have any effect on his copy. Mecha cleaves them with his claws and darts at high speed towards his enemy. "Nope. Sorry. Did you wash your hands, young man?" Spidey joked, using his trust spider-sense to avoid Mecha's incoming claw swipe. He quickly grabs his copy with his webbing and throws him to the wall, but Mecha was able to attach himself to it almost instantly and darts back at Peter again, this time surrounding himself in energy in a drill-like fashion. "Hey! I can't do that-GAH!" Peter was tackled by the drilling spider robot and accidently hits Sonic during his fight with his copy.

"Spidey! You okay?" Sonic asked him.

"I'm fine. Armor's a bit damaged though. Not a big deal." Spidey replied, standing back up next to Sonic as they confront their evil doubles. "With these two having all our moves and powered up by the Cube, we might not ever reach the doctors in time." He said.

"Right, so we'll fall back on the ol' 'mix and match' plan." Sonic said, having a plan in mind.

"And what plan would that be?" Peter asked, confused what's talking about.

"Metal Sonic is 'evil robot me' and Mecha Spider-Man is 'evil robot you', right? They're built to beat us at our own game. But they aren't built to beat anyone else. So we swap dance partners and finish this quick!" Sonic proposed his plan of attack to Peter.

"Oooo. I like it!" Spidey smiled.

"Knew you would—It works every time! LET'S GO!" Sonic dashes towards Mecha Spider-Man this time while Spidey has his hands tangling with Metal Sonic. Sonic boosts towards Mecha, thinking his speed will overcome Mecha's reflexes and Digital Spider-Sense. "Hey there, metalweb! Get ready to be squashed into nuts 'n bolts!" Sonic taunted. He throws a speedy jumping kick that surprisingly missed because of Mecha's Spider-Sense telling him to duck, "That's not right!" Unlike the original who likes to joke around a lot and almost never takes things seriously, Mecha stays silent and takes his battles very seriously, allowing him to be in-tuned with his Spider-Sense to make himself untouchable. "Let's try that again!" Sonic goes for a few more blitzing moves but Mecha keeps dodging them with ease, "Can you stop doing that?!" Mecha predicts Sonic's next position and brutally kicks him in the chest. He web ties him up and slams him three times before finally punching him through a few metal crates, standing with a cold, menacing pose that would frighten anyone.

Since Sonic didn't do so well against Mecha, it's safe to assume the same thing will happen with Spider-Man against Metal. "Hey robohog, could you slow it down?! I'm trying to hit you!" Spidey joked, having a hard time trying to attack the lightning-fast super badnik. 'Let me try my armor's lenses to predict his next location. Maybe that'll work.' Peter presses a button on the side of his helmet, turning his lenses blue. He stretches his arm out and made his signature hand gesture, shooting a strand of webbing in Metal's general direction to trip him, 'Gotcha.' That plan immediately fails once Metal activated his V. Maximum Overdrive Attack to cleave the webbing apart, "Oh come ON," he shouts before Metal grabbed his face and threw him to a retreating Sonic while the robot hedgehog made a pose with his claws.

"'Works every time', huh?" Spidey said sarcastically that Sonic's plan didn't work at all.

"What are you? The master of sarcastic quips too," Sonic quips, "New plan: We team up then you blitz one of them, and open up with whatever amazing abilities you and that armor has. I say we attack Metal Sonic, since he's got the speed." He proposed, wanting to go after Metal Sonic first.

"No, no, no—Mecha Spider-Man has the speed, strength, webs, AND the Spider-Sense." Spidey retorted, wanting to go after Mecha Spider-Man first.

'Oh, come on…" Sonic whined.

BGM End

To end this argument, the duo plays a few quick rounds of rock-paper-and scissors. They had a tie with rock. They had another tie with paper. But the third round belonged to Spider-Man, who won with scissors against Sonic's paper.

BGM-NIGHTS: Journey of Dreams OST- NIGHTS and Reala - Theme of A Tragedic Revenge

'Aw, nertz. Fine. Cover me!" Sonic instructed. Spidey fires a barrage of web bullets to distract Mecha while Sonic bounces around the room before aiming himself towards the metal spider, who is ready to shoot him down.

"Was saving these for Ock, but no time like the present!" Spidey fires his new Magnetic Webbing as a giant impact ball at Mecha while he's distracted. Though Mecha was quickly able to cleave it after smacking Sonic away thanks to his Digital Spider-Sense, some of it was still left on his body, enough to attract a metal crate to hit him from the side. With him stunned for a split second, that gave Sonic the chance to attack. As the hedgehog spins around Mecha's feet, Spidey zips in and unleashes his Crawler Assault enhanced with electric punches before flip-kicking him straight to the air.

"Here comes the Sonic who stomped the spider out!" Sonic joked, jumping above Mecha for a brutal spin stomp. Still, that wasn't enough to keep Mecha down as he was able to smack Sonic away with a slap before he got kneed by Peter.

'If this robot is anything like the one Kang used against the Avengers, then the main control stud should be right around…' Peter flips behind Mecha and locates the stud on the robot's neck, 'Here!' And with a push of a button, Mecha Spider-Man collapsed as all his circuits deactivate. And for good measure, Spidey slams a powerful fist on his back to weaken his body in case he somehow reactivates himself.

"Mecha is down!" Spidey said.

"Keep up the pressure!" Sonic instructed as they turn their attention to Metal Sonic.

Spidey unleashes another barrage of Magnetic web bullets, forcing Metal to block them until he got smacked in the back by a spinning Sonic followed by a large crate Spidey web-slams on top of him. "This is your stop!" Sonic joked.

Unfortunately, Metal survived thanks to his Burst Shield then tackles Spider-Man again with his Maximum Overdrive Attack. "Not this time!" Spidey encases his left fist with magnetic webbing and punches Metal through the chest out of his energy tackle, allowing Sonic to defeat him with a good ol' spin attack.

BGM End

BGM-Ultimate Spider-Man Game OST-Venom Cinematic

"I think Metal Sonic's down for the count." Sonic said tiredly, looking at Metal Sonic who has sustained enough damage to keep him from even kneeling.

"Mecha is still down, but I can tell it's trying to turn itself back on. Man, it's more stubborn than Kaine," Spidey said, looking at Mecha's eyes flickering repeatedly. To keep both him and Metal down, Spidey sprays them with some magnetic webbing to keep their systems weakened, "I'll spray them with Magnetic Webbing to make sure they stay down."

"HRGH!" Sonic says as he stretches his aching back after all that fighting with no rest. "I don't suppose you've got some rings stashed in your shooter?"

"Only if you have a first-aid kit hidden in your sneaker." Spidey quipped.

"No such luck. C'mon, we've still got doctors to beat…" Sonic says, giving his spider bro a fist-bump.

"And worlds to save. Let's go." Spidey finished.

Suddenly, Peter's Spider-Sense blares like crazy, the likes he never sensed before. Immediately after, a large explosion happens behind them thanks to the menacingly large silhouette of what appears to be the docs' Cosmic Egg-Octobot X. Sonic and Spider-Man try to fight back but they were still fatigued from the fight with their rivals. And so, the heroic duo was quickly beaten and knocked unconscious by a large cosmic blast, knocking out the six Chaos Emeralds to the open for the mech to retrieve as well as the heroes.

BGM End

A short time later…At the heart of the Octo Egg

BGM-Sonic Rush OST-Anxiety

"…Ugh…" Sonic groaned, beginning to wake up after being ambushed.

"My head…Where are…?" Spidey also begins to wake up and wonders where they are.

The heroes awakened to find themselves imprisoned in containment pods and binded with energy rings in a large circular room where in front of them is the Cosmic Egg-Octobot X that attacked them, revealing its open core of the seven Chaos Emeralds and the Cosmic Cube. They look up to see Ock and Eggman descending in front of them on the Egg-Octo Mobile.

"Ahh. It would seem Sonic and Spider-Man are awake!" Ock noticed

"Did you kids enjoy your little nap? Hahahahaha!" Eggman taunted.

"So instead of finishing us off, you kept us alive to gloat!" Spidey joked.

"There's no fun in JUST crushing your body! We want to crush your SPIRIT and everything you stand for before you die!" Ock grinned.

"Haha, corny."

Sonic looks around and spots the collected Chaos Emeralds and the Cosmic Cube in the core of the docs' mech, "Guess you guys took our Chaos Emeralds while we were out. And is that the Cosmic Cube everyone been talkin' about?"

"We call it the 'Tesseract'! A powerful weapon that has equal, limitless power to the Chaos Emeralds that gives us access to reality and open portals to countless dimensions!" Eggman replied.

"Did you steal that name from a movie?" Sonic joked.

"Now that we have both the Chaos Emeralds and the Cube, we can finally begin charging up for the final phase of our master plan!" Ock smiled, ignoring the hedgehog's unfunny joke.

"If the Cube has power equal to the Chaos Emeralds, why waste time collecting them?" Sonic asked.

"Was it just to buy you guys some time until you could complete it?" Peter asked.

"Yes and no. We did needed enough time until we could harness enough ISO-8 to complete the Cube, but we knew the emeralds could still get in our way, so we sent the Sinister Six to collect them." Ock explained.

"If they have failed, which they did, we knew you were still gonna bring the emeralds to us, making it easy to take them from you." Eggman added.

BGM End

"That still doesn't explain why you haven't used the Cube yet. You don't need the emeralds to reshape the entire universe." Spidey asked another good question.

Otto grins creepy one as he begins to explain, "Just ONE universe? My dear boy. It's not just both our universes that needs a little 'redecorating'."

BGM-Sonic the Hedgehog (2006) OST-The Resurrection of Solaris

"With the Emeralds and the Cube, we can reshape everything. Rebuild all creation to the tiniest details!" Eggman continued.

"We won't simply be correcting our worlds…" Otto started.

"We'll be GODS!" Eggman continued.

"And when we erase YOU TWO from all reality, THERE WILL BE NO ONE LEFT TO STOP US!" Both mad doctors proclaimed simultaneously, a proclamation that horrifies the red and blue heroes.

BGM End

BGM-Sonic Rush Adventure OST-The Power

"MWAHAHAHA! AHAHAHAHAHAHAHA!" Ock laughed insanely.

"OHOHOHOHOHO! OOOHOHOHOHOHOHOHO!" Eggman cackled maniacally.

"You're beaten!" Ock taunted.

"You're broken!" Eggman believed.

"Ultimate power from both our universes is now ours! WE'VE WON!" The evil genius proclaimed towards the trapped heroes.

"To be fair, you DID get past every one of our defenses and defeated our Sinister Six…" Eggman noted.

"Like that was a surprise? Still, in the end, we came out on top." Otto remarked.

"And there will be no last-minute rescues for this this time!" Eggman said.

"Mysterio may be down, but there are still plenty of his Phantom Villains and robots to keep your friends QUITE busy until it is too late! We're even using the Tesseract to block all interdimensional travel from this universe to the next, so don't expect the Avengers to show up once they've figured out where've you been!" Ock remarked.

Outside the Octo Egg

Shadow defeats a few more phantoms of Green Goblin, Venom, and the Lizard. He looks around the warzone there are still plenty of phantom villains keeping his team, the Freedom Fighters, and GUN busy. And if they weren't enough, Badniks and Octobots have been deployed to assist the phantoms to destroy them.

'This isn't good. I can tell Mysterio has been defeated since there haven't been new phantoms lately, but what's taking Sonic and Spider-Man so long? This should've been over by now…Something's gone wrong.' Shadow thought.

Then, without warning, a mysterious elderly voice begins to talk to Shadow telepathically, the same voice that has assisted Spider-Man ever since the start of his adventure, 'Grab one of the ISO-8 from a robot to assist them, and do it quickly.'

"Who said that?!" Shadow asked but he could tell the voice was long gone. "I don't know who that was, but it definitely sounds like those two are in trouble. Just need to grab one of those ISO-8." The ultimate hedgehog teleports to an Egg Pawn, and with a single piercing punch, destroys it and grabs the rainbow-colored ISO-8 crystal from its core. "Let's see what this baby can do." He said and begins to absorb its power, charging himself up to unleash one of his more destructive attacks. "Chaos Blast!" He unleashed a humongous explosion of his chaos energy and the ISO-energy from the ISO-8, eradicating a majority of the remaining Phantom Villains and the robots in the vicinity, finally giving the heroes some breathing room.

"Whew. We can finally breath. Great job, Shadow!" Sally complimented him.

"I have to go! Sonic and Spider-Man are in trouble!" Shadow said before using the ISO-8 to activate Chaos Control to get himself inside the Octo Egg.

BGM End

Back onboard the Octo Egg…

"Rising up to a cosmic-level threat? Never seen you THIS ambitious, Ock." Spider-Man said to Ock, honestly not expecting his arch-nemesis to ever reach these heights of villainy in his entire life.

"Believe me, I've been dreaming for this day to come for YEARS, but nothing ever went my way, mostly because of you," Otto replied, "But ever since the Pulse, everything's changed. The ISO-8. I may not know what caused their existence in the first place, and I don't care. They were the key to FINALLY fulfill my dream to proving to everyone who is their absolute superior!"

"Why do I get the feeling you tried this stunt before, Eggman?" Sonic said, having vague memories he once teamed up with a 'super fighting robot' from an alternate dimension to stop Eggman and that robot's mad scientist from reshaping reality. The blue hedgehog struggles to break free from his imprisonment as he continues talking, "Spidey told me the Cosmic Cube is too DIFFICULT to control and shouldn't be used by jerks like you! Using it with the Chaos Emeralds, that could BREAK our reality!"

"Oh, we are aware of the dangers of combining our respective world's most powerful artifacts, but we merely want to harness that power. The ULTIMATE power! Once we have reached optimal capacity, we'll just reshape everything in one fell swoop without the slowly risking the dangers of 'breaking' reality! Then I'll be free to create Eggmanland in a universe where I rule!" Eggman grinned.

"Now do you understand our pure genius? Hahahaha!" Ock laughed.

"Your 'genius' could get us all killed!" Peter scowled.

"That's mad scientists in a nutshell, buddy." Sonic replied with an unsurprised look. "C'mon, Webs! Can't you use your webs or your sticky powers to bust us out?" He asked his fellow prisoner.

"No. The rings have me locked down. Can't you just smash us both out?" Spidey asked him.

"Kinda need some momentum for that, buddy." Sonic replied, saying he has no way to bust them out.

"Then what are gonna do?" Spidey asked.

BGM-Sonic Rush OST-Blaze Pinch!

"I suppose we can just finish you off before you some miracle saves you, because we're kinda tired of that always happening!" Ock smiled. With a press of a button, he commands the Cosmic Egg-Octobot X to use the power of the Chaos Emeralds and the Cosmic Cube to charge up a powerful blast from the core that will most surely kill the two heroes. The beam fires at them at near light speed and comes in contact with the surprised heroes as they are seemingly erased from existence, gone without a trace.

"MWAHAHA! AHAHAHAHAHA! YEEES! Sonic and his friend are finally dead! They are out of our way FOREVER!" Eggman cheered.

"We have to move now! It would seem the other heroes and GUN have just finished with our army down below! Activate the wormhole and set a course for New York City!" Otto commanded.

"You got it! We can spend a little time playing around with the heroes of Earth until our 'cosmic reshape blast' is fully charged!" Eggman gleefully smiled.

The evil geniuses enter their ultimate mech powered by the Chaos Emeralds and the Tesseract. With power to control both universes, they open a gigantic blue wormhole in the sky above the Sinister Egg Zone for all to see. A portal that connects Mobius to Earth, one that leads to New York City. The Octo Egg takes flight towards the vortex to give a glimpse of Earth of their final doom.

BGM End

Earth, Baxter Building

"I did it! I broke through the dimensional barrier that'll take us to Mobius!" Reed informed Johnny, Iron Man, and Captain America that he now has access to teleport themselves to Mobius to save Spider-Man and stop Doc Ock. But it would seem there might be no need for that. Because all of a sudden, the building's alarms start to blare like red crazy after picking up a tremendous energy signature that could danger the planet.

"What's happening?!" Tony asked.

"A cosmic-level threat has appeared, but where-?" Reed wondered.

"Uh, smart dudes…" Johnny points the two geniuses and the captain out the window to a gigantic blue wormhole that has opened up above New York City. "We might have to put that dimension traveling on hold, because it looks like that other universe is invading ours." He said as calmly and jokingly as possible as the heroes of Earth spot the gigantically menacing Cosmic Egg-Octobot X and the Octo Egg descending from the portal to begin their takeover of both universes.

KFX Here: If some parts of this story reminds you of the Sonic/Megaman Worlds Collide comic, I have definitely take some inspiration from it.