BGM-Sonic Adventure 2 OST-SA2 in the Groove

Sonic: I'm Sonic! Sonic the Hedgehog! Thought we check on our friend, Knuckles, to see if he was okay. Guess what, he wasn't. Mysterio and Metal Knuckles trapped us all in some twisted illusion of Angel Island. We managed to break through the illusion and beat them, but now we have another problem. GUN HQ is under attack by Metal Sonic and a robot Spider-Man called Mecha Spider-Man. Shadow, hold them off! We're coming as fast as we can!

BGM End


Act 9: Assault at G.U.N. HQ

G.U.N. HQ, Central City…1 hour ago

BGM-Spider-Man 3 Game OST-Black Tension

Around the same time Spider-Man and Team Sonic were trapped in Mysterio's illusion that effectively transformed Angel Island, another big battle was about to begin here at Central City. Inside a large mountain called Mount Freedom, located near the sea, is the main base for the Guardian Units of the Nation, or simply G.U.N. Shorten to the point, they are Mobius's version of S.H.I.E.L.D., the top military organization that protects the world from all sorts of threats, whether it be from mad doctors or evil aliens.

Everything seems peaceful at the moment. Pretty quiet. Pretty normal around here. Makes sense. GUN HQ is considered by many the most secure shelter on the planet. It's heavily guarded by mother computers, armed security cameras, and an immeasurable number of GUN soliders and mechs, along with their most powerful group of agents, Team Dark. Yes, it would be foolish for one to simply attack the most heavily-armed fortress in the world, that is, unless you bring a powerful army.

And certainly a powerful army has arrived. From out of nowhere above GUN HQ, dozens of Blowfish Transporter badniks begin their attack on the base by dropping a robot army consisting of Badniks and Octobots.

"Enemy sighted! Returning fire!" One GUN solider said.

GUN quickly retaliates against the Badnik Horde attacking their base. Human soliders uses their firearms to destroy the robots before they could set foot in the base. When they aren't enough, that's okay. GUN deploys their Beetle and Hunter series robots among others to combat the robot menace. But none of that prepared them for some of the strongest foes they are about to face. While GUN soliders are destroying more badniks, a blue blur that moves as fast as Sonic blitzes them, destroying a few dozen GUN robots in less than five seconds.

"What was that-?!" Another GUN solider asked in surprise before a splash of webbing hits his face. A blue beam of energy coming from the enemy's hand blasts the human troops through a wall. More GUN robots retaliate against this metal red-and-black intruder with their various weapons, but this new robot is fast, agile, possessing the spider-like reflexes to dodge all of their attacks before demolishing them with his "superior" strength.

Not even GUN's Big Foot mechs proved a match for this deadly robotic duo. One of the Big Foots encounter the robotic blue blur, only to get blitz repeatedly until it was nothing. As for the other Big Foot, it was wrecked from a brutal assault of lightning-fast punches from the robotic webslinger, smashing through the glass of the walker and causes it to tumble down to its own explosion.

BGM End

BGM-Spider-Man 3 Game OST-Black Suit Theme #2

Standing in front of the flames and destruction are the super battle bots, Metal Sonic and the newly-created Mecha Spider-Man. Both giving the rest of GUN's soliders the glowing mean eye that inflicts fear to the hearts of the organics.

"Attack." Mecha Spider-Man speaks with a monotone, cold, but still very scary voice. Their unified army of robots raid the base to bring it to its destruction, effectively going to war against GUN. "I will retrieve the Iridium and Sandman. You retrieve the Chaos Emerald." Mecha ordered his metal partner.

"Acknowledged." Metal responded.

The dark metal enforcers fly through the fortress to complete their respective objectives. With Mecha Spider-Man, he blazes through the prison chambers to retrieve the vial that contains Sandman stashed behind a secured laser-grid cabinet. "Ah, who is it now?" Sandman asked, then was surprised to see it was the mechanized version of his most hated foe that rescued him, "What the-Spider-Man?! Why are you the one rescuing me?!"

Mecha doesn't bother answering and simply pockets him in his waist compartment. Now it's time to retrieve the Iridium, the stabilizing agent needed to complete the Tesseract. The metal spider tracks the Iridium to the lab of a particularly short scientist of GUN, Doctor Julian Snively, who has a shadowy history working with Dr. Eggman in the past, but now seeks a more active role with GUN, possibly as a means to facilitate his own bid for world conquest.

Mecha Spider-Man punches the door that leads into Snively's laboratory to find the precious Iridium he needs is currently being experimented on by Snively himself. "Hey! Can't you see I'm busy here?!" Snively talked to the silent enforcer, clearly annoyed of all the ruckus he's causing. Mecha wastes no time webbing Snively to the wall, "What the heck is this?! What kind of Eggman robot are you?!" Mecha grabs the Iridium without worry and flies away leaving Snively stuck to the wall. "HEY! Aw man! Why does this always happen to me?" He asked, unamused of all this abuse, whether he's working with Eggman or with the military, Snively's luck plain sucks.

And as for Metal Sonic. That hedgehog duplicate had no trouble defeating GUN soliders on his way to the vault that holds the red Chaos Emerald. He breaks through to the vault and picks up the Chaos Emerald and now gets ready to leave the base.

BGM End


With Team Dark…

BGM-Sonic Adventure 2 OST-Vengeance Is Mine ...for Radical Highway

Team Dark. GUN's most powerful group of agents; namely the ultimate life form, Shadow the Hedgehog, expert spy, Rouge the Bat, and the walking arsenal, E-123 Omega. They have been deployed by GUN Commander, Abraham Tower, to assist the war against the doctors' robot army. They arrive at the battle zone where most of the action is taking place.

"Looks like we're having a party." Rouge joked.

"Team Dark! Assist the troops!" Shadow ordered the team.

"I will protect the flesh bags while proving my dominance!" Omega primes his rapid-fire machine guns, destroying the robots he deems inferior, which are everyone.

"Never saw robots like these before! They're very grabby." Rouge jokes while flying away from Octobots, gaining enough distance between them to screw kicking them into oblivion.

"They're called 'Octobots'. Watch out for their tentacles." Shadow advised, using his spin attacks to demolish everything that dares to attack him.

Team Dark has proven to be more than a match for the badniks and octobots alike, overwhelming them with their destructive abilities while saving the GUN soliders who are in danger of being killed. "Are you alright?" Shadow assists one solider back up his feet.

"I-I'm fine. Thank you, Agent Shadow." The GUN solider thanked the ultimate hedgehog.

"Do we know who's leading this army?" Shadow asked.

"We have confirmed one of them is Metal Sonic, but there was someone else with him. Some kind of 'robot spider person'. It was so strong. We never seen anything like it." The GUN solider replied.

Shadow ponders this new information, "A robot Spider-Man? The doctors must've created him and sent him and Metal Sonic to retrieve the Chaos Emerald and possibly Sandman." He turns back to Rouge and Omega who are just about done cleaning up the remaining robots in the area. "Rouge, Omega. Go after the robot Spider-Man. I'm going after Metal Sonic." He ordered.

"Oh sure. Leave us with a robot copy of a hero from another dimension we don't know anything about and could possibly be dangerous." Rouge sarcastically quipped.

"He's strong, fast, can shoot webbing, and has the ability to sense incoming danger," Shadow said, guessing what Mecha's abilities could be since he's possibly based off Spider-Man and knows them after he recent team-up with the wallcrawler, "Now let's get moving!" He ordered as he skated to another room.

"Sometimes I wonder why we're a team if he goes off on his own." Rouge huffed.

"Let us hurry. I want to challenge this mecha spider and embarrass him severely to pieces." Omega said.

Rouge puts up a holographic screen from her wrist device, "Should probably make a call to Sonic to see if he and that spider guy can help us out. This might be a little more than we bargain for."

BGM End


With Metal Sonic…

BGM-Ultimate Spider-Man Game OST-Venom Fight 3

"Chaos Emerald obtained. Returning to base." Metal Sonic contacted his partner after retrieving the Chaos Emerald, flying at top speed through the underground base. But then he gets the distinct feeling he's about to be attacked by someone that could match his speed and strength.

Shadow teleports next to Metal and kicks him in the head, "You're not leaving with that emerald!"

Metal quickly recovers and engages Shadow in an all-out high speed brawl. The two fierce hedgehogs are neck-and-neck with their attacks, taking their fight from the floor to the ceiling in a single blur of speed. The super badnik uses his claws and strikes Shadow back to the floor. Shadow snarls and teleports back above Metal for a double axe handle that sends him to the floor. Shadow follows up his devastating combo with some Chaos Spears, but Metal activates his indestructible Black Shield to easily withstand his attacks. He then instantly switches to use his Maximum Overdrive Attack, enveloping himself in a cosmic blue energy sphere. Shadow takes notice of this energy before getting tackled by the robot's attack.

'That's new. He never possessed this kind of energy. It's not the ISO-8, but there IS a connection. It's more potent, and he only has a portion of this cosmic power.' Shadow thought, sensing that Metal Sonic has been given a "cosmic" upgrade the likes he never sensed before. 'What did the doctors do?' He asked himself before returning to battle against this cosmic-enhanced Metal Sonic.


With Mecha Spider-Man…

"Just like a regular insect, this robot variant will be terminated." Omega taunted.

He and Rouge have already engaged Mecha Spider-Man in a fierce battle, a battle Mecha clearly has in the bag. He uses his spider-reflexes and agility to easily swerve through Omega's relentless barrage of missiles and machine guns and kicks him in the chest, knocking him to a wall. With his Digital Spider-Sense, he senses Rouge coming a mile away with her dive kick. The mecha menace flips over her, and before Rouge could turn around she is webbed up and thrown at her partner.

"Didn't think spiders could be so hard to squash…" Rouge said, clenching her pained head. She gets surprised when Mecha decided to topple the wall behind her with his webbing on top of her and Omega.

"You're just not using the right methods." Omega replied as he punches the collapsing wall. "Let me teach you." Omega turns back and focuses all his weapons on Mecha, but the moment he faced him, he was already gone from where he was previously standing. "Where did the metal bugman go? Did I scare him off with my superiority?"

In a blur, Mecha appears between Rouge and Omega using his metal talons to scratch their backs. He then proceeds to slash on Omega multiple times across the body, slowly ripping apart the rouge badnik until it was forced to kneel before him. "I am…still superior…" Omega barely said while he's covered in wounds.

His Digital Spider-Sense tingled again, grabbing a sneaky Rouge's kick and throws her through the air. He immediately follows with a web yank to her wings and swiftly slams her down on Omega. Mecha Spidey then proceeds to utilize one of his special moves, his own version of "Crawler Assault" called "Relentless Fury". He electrifies his fists, further enhanced with cosmic energy thanks to the Tesseract energy, and delivers a flurry of electrified-cosmic punches on the weakened Rouge and Omega, finishing them off with a large slamming web hammer that instantly KO's them. With the inferior organics defeated, Mecha flies away to aid his metal partner in crime.


With Metal Sonic…

Both he and Shadow are still going at it, neither letting up in their epic brawl. The collide spin attacks that bounces them around the area until Shadow kicked him out of his. With a chaos-enhanced punch, Shadow attacks, but Metal was able to use his arms to block it. He uses his cosmic energy to frequently teleport around Shadow, confusing him where he's gonna end up. But this was all a distraction for Mecha to suddenly appear and punch Shadow across the room.

"So you must be the new copy, huh? Guess that means you beaten Rouge and Omega," Shadow talks with Mecha, "You made a grave mistake doing that. Now I have more reason to destroy you!" Shadow throws multiple Chaos Spears at his new opponent. Mecha blocks them with a web shield and even avoids Shadow's teleporting swing kick thanks to his Spider-Sense. The ruthless metal spider then grabs Shadow by the throat, "You're certainly more serious than your counterpart…"

"I am superior to the original in every regard." Mecha spoke. He then blasts Shadow out of his hand but he managed to recover by skidding on the ground. Charging up a light-speed spin dash, Shadow blitzes Mecha multiple times, surpassing his warning senses because of his enhanced speed. That doesn't mean anything to Metal Sonic, who Shadow seemed to have forgotten about. Metal intercepts the hedgehog during his light speed attack and teams up with Mecha for a double punch that defeats the ultimate life form.

Team Dark has been defeated. GUN HQ have taken a beating. The Chaos Emerald, Iridium, and Sandman have been stolen. With their objectives completed, Metal Sonic and Mecha Spider-Man leave the base with the remaining badniks, returning to their masters for the endgame.

BGM End


10 Minutes later…

"Uh oh! Are we too late?" Sonic asked.

Riding the Tornado, Team Sonic and Spider-Man arrived to see GUN HQ half destroyed. Part of the mountain crumbled, windows were broken, walls were torn and the base was partially burned. Numerous GUN soliders were wounded during the attack while a number of them were killed.

Spidey lowly growls, angry after witnessing the aftereffects of the assault at GUN HQ, "Octavius…Eggman…"

"The docs must have planned this. Attacked both GUN and Angel Island at the same time to keep us divided." Sonic deduced, scowling that they fell for their ploy.

"And we felt for it. Damn." Spidey cursed.

"Hope everyone is okay." Tails said with a worried look.

After landing the Tornado, the four colorful heroes enter the half-destroyed base. They walk past the numerous soliders receiving medical attention and partially destroyed GUN robots returning to the shop for repairs. A few GUN soliders mistake both Spider-Man and Sonic for their murderous metal counterparts and points their weapons at them. "Don't move!" One says.

"Oh not again!" Sonic remarked as this is the second time GUN has mistaken him for his evil twin, the first being Shadow.

"Oh that's just perfect. I'm about to be arrested in another dimension. Does the universe hate me or what?" Spidey sighed.

"At ease, soliders! We don't want to make that same mistake twice!" GUN Commander, Abraham Tower, orders his soliders to stand down. He and Team Dark, who have recovered from their battle against metal duo, approaches the heroes.

"You guys took your sweet time. Is it because Knuckles got tricked again?" Rouge joked.

"Shut it, Rouge! For your information, we were trapped in an illusion by Mysterio halfway across the world!" Knuckles retorted, scowling with the joking bat.

"Where's Metal and Mecha?" Sonic asked Team Dark.

"Long gone with the Chaos Emerald and Sandman." Shadow answered.

"According to Dr. Snively, they also stole some Iridium." Commander Tower added.

"Iridium? What does the doctors need Iridium for?" Tails pondered.

"It's a stabilizing agent for the Cosmic Cube." Spider-Man responded.

"Cosmic Cube?" Shadow questioned, never hearing of this reality-warping cube until now.

"It's something from my world the docs managed to create using the ISO-8. It's INSANELY powerful. Enough to rewrite reality." Spidey answered what he knows about the Cosmic Cube.

"That must've been the power source that empowered Metal and Mecha." Shadow pondered, which is definitely the case.

"Exactly. Now that they have the Iridium, they can unlock the Cube's full potential without destroying the planet." Spidey said.

"Then we must find their base quickly! Where is it?" Commander Tower asked.

The vibration coming from the Miles Electric gets Tails's attention. He takes it out to see it's Sally Acorn calling, the chipmunk princess leader of the Freedom Fighters. "It's from Sally!" Tails said before answering the call, putting it on video chat mode to speak with the princess.

'Tails. I think we may have a lead where the doctors' base is.' Sally informed him.

"Good, 'cause things are not getting pretty, Sal." Sonic quipped.

'Nicole has been scanning the globe for anything related to the ISO-8 and recently found a general location where there they could be. There have been unstable spikes of cosmic energy in this area we didn't think was possible.' Sally informed.

"A Cosmic Cube is extremely hard to control. Like it has a mind of its own or something. That may have been the reason you weren't able to detect it until now because of the cosmic tremors it occasionally releases." Spidey told the princess.

'We're about to investigate the area now. If this is their base, we'll rally with you in the morning.' Sally said.

"That'll give us enough time to rest up and get ready for the big finale." Sonic remarked.

"Agreed. All hands are on deck this one. I'll make sure GUN will assist raiding their base. If the doctors thought they beaten us, they have another thing coming!" Commander Tower said, pumped-up to launch a counterattack on the doctors for almost destroying their base.

"You kinda remind me of Nick Fury just without the eyepatch." Peter quipped.

"Is he the commander of your world's military?" Tower asked the webslinger.

"Something like that." Peter quipped.

"How about you all stay here for the night?" Shadow offered to Team Sonic and Spider-Man to rest up inside the base.

"Shadow inviting us for a sleepover? The world really is coming to an end." Sonic quipped, which got Rouge chuckling but got Shadow growling.

"Just be ready for tomorrow." Shadow angrily walks away as Rouge leads Team Sonic and Spidey to their living quarters.


An hour later…Inside a GUN laboratory

Peter and Tails are alone in a lab using GUN's resources to build Peter a high-tech armored suit that will certainly come in handy for the final battle tomorrow. Sonic walks into the lab to check what they're working on.

"There ya guys are. Whatcha workin' on?" The hedgehog asked, looking at the red-and-blue spider armor on the table.

"Peter wanted to make armor capable of fighting the Sinister Six when we fight them tomorrow. We asked the Commander and he allowed us to borrow GUN's equipment." Tails answered.

"An Anti-Sinister Six Armor. Not a bad idea." Sonic grinned.

"I want to be prepared for them this time. There's no time to waste. Worlds are counting on us to stop them!" Peter says as he picks up a small glowing crystal of chaos energy GUN had in storage and some ISO-8 salvaged from the badniks that were destroyed during the assault on GUN. "So this is what you call a Chaos Drive, huh? Using this with the ISO-8 should help plenty. Hopefully this suit doesn't melt in acid."

"I take it that's happened before?" Tails asked.

"With my first Spider-Armor. Built it to fight the New Enforcers…It's a long story." Spidey shamelessly replied. "But I've been an intern for Tony Stark for a while, so my armor-making skills has improved tremendously. Just hope it's enough." He said a bit somberly, something Sonic and Tails immediately took notice.

"Hey Pete, don't stress yourself out." Sonic frowned.

Peter sighs deeply, touching the table with both hands straight, "I-I know, it's just…I can't help thinking this is my fault. The fate of two worlds are at stake because of my enemies. The ISO-8 came from my world, and if I knew Doc Ock was planning something this big…I'm just sorry you guys got caught up in my mess."

Sonic forms a small smirk on his face, "It's alright. This isn't your fault. Remember, you're not alone on this. You got us, our friends, GUN. No reason to put all the pressure on yourself."

"Sonic's right. There's no need to apologize. We'll always have your back." Tails smiled to comfort him.

Peter smiles after hearing their comforting words, "Thanks guys. I thought when I first entered this dimension, I would have to resolve things on my own. Glad I found friends like you."

"That's my dimensional counterpart. A brother from another dimension." Sonic smiled.

"Brother…Yeah, I guess we are kinda like that, though I'm the more attractive." Peter joked.

"Pfft. Pul-lease!" Sonic quipped before all three friends share a laugh together.


Above the skies

Above the night skies of Mobius is a large flying aircraft that looks to be based off the Springs and Bumpers found in various parts of the planet and its Zones. This flying fortress is known as the Sky Patrol, the Freedom Fighters' mobile base of operations. In the command center of the ship are the other members of the Freedom Fighters besides Sonic and Tails: Hammer hero, Amy Rose. Brave little girl, Cream the Rabbit and her best friend Cheese the Chao. Gentle fisherman, Big the Cat. Gruff mechanic, Rotor the Walrus. French swordsman, Antoine D'Coolette, and his cyborg wife, Bunnie Rabbot. And lastly the leader of the team, Sally Acorn, sitting on the captain's chair. After days of searching, it would appear the Freedom Fighters have finally located the doctors' secret base.

Sally opens up her handheld to talk to the holographic projection of the advanced A.I. and her best friend, Nicole the Holo-Lynx. "You sure this is the place?" Sally asked her A.I. friend.

"After looking at those large statues, yup. Honestly don't know how we didn't notice this before." Nicole replied.

"It's a mystery we don't have time to solve. Rotor. Set a course to GUN HQ." Sally ordered.

"Roger." Rotor replied.

"Nicole. Contact Sonic and Tails that we'll be meeting them soon. Tell them we found it." Sally ordered.

The Sky Patrol makes a U-turn away from the doctors' secret base. A secret base that is called "Sinister Egg Zone", a high-tech metropolis with some underwater elements and large statues of Eggman and the Sinister Six plastered everywhere. But what's even more terrifying is the large Death Egg-looking building at the middle of the zone. A stationed flying fortress that resembles the Death Egg but with an octopus emblem. The all-menacing "Octo Egg" where the final battle for two worlds will begin.


KFX Here: As you could tell, this chapter was completely different from the original by having the Battle at Angel Island and the Battle at GUN HQ happening at the same time. It kinda was the same thing in the original but Sonic and Spidey arrived a little sooner to help GUN, which made things less dramatic. I've also grown a likening making Mecha Spider-Man as a cold, no-nonsense badass with few words. I'm thinking to make him a main villain one more. What would you think? And yeah, instead of White Acropolis from the original, I'm taking a page from "Sonic and Mega Man: Worlds Collide" by having the doctors' base in an original location.