Gobi Desert

From a distance, a rumbling can be heard. Coming closer to the rumbling, it is shown that the rumbling is the result of many motorcycles and cars driving through the desert. On them were various costumed heroes with bug-eyes on their masks. They are the Kamen Riders. Lone wolfs who have come together to fight a common menace- Shocker.

Driving towards a cliff, Shocker's base of operations comes into view. As they come closer, a giant, black, metallic, humanoid figure begins to stand from behind the cliff, slowly obscuring the view of the base, eventually standing tall enough to stare down directly at the intruders. Knowing that this guardian has to be dealt with to advance, the rider leading the group, one who dons a red scarf, white gloves and a light-green helmet, gave a hand motion to the riders behind him and jumped off his bike, with the rest following his actions in unison.

Flying thirty meters into the air, they pointed their best foot forward when gravity started to kick in, and they let out their signature mighty cry:

"RIDER KICK!"

All at the same time, fifty riders landed foot first on the giant's chest, the combined strength of the kicks powerful enough to make a hole straight through it. As all of the riders landed with ease, the giant started falling down as if exhausted, followed by the giant exploding right as it's knees touched the ground. Taking out the guard is finished. Now they had to break in.

The group of riders cleared out of the way when the rider moved forward, one clad in dark green with trims of light green, and he progressively got bigger with every step he took. Taking his last step, he grew over two-hundred times his original size. Using his increased mass, he kicked a hole through the base with ease, allowing his rider allies access into the base. With an entrance way made, he stood guard in case of any reinforcements. As he looked into the distance, he can see spaceships with an almost skeletal look to them coming at him. He cracked his knuckles and assumed a fighting stance.

He let out a smile under his mask, thinking to himself:"Guess I can't catch a break."

With the riders inside the base, they were greeted by thousands upon thousands of foot soldiers wearing black clothes and masks decorated with a skeletal pattern. The odds were overwhelming in terms of numbers. However, quality beats quantity. A red, yellow, and green rider pulled out three gray medals and replaced the traffic-colored medals in his belt buckle; a metallic red rider pulled out a blue USB and switched it with the current USB in his belt; a golden-maned rider removed a ring attached to a chain and slammed it into the side of his belt buckle; a green rider drew a card from his belt and inserted it into his gun; and a black rider covered in red lines unfolded a suitcase into a cannon, inserting a cell phone attached to his belt buckle into a slot on the cannon. Their belts yelled out with passion as their forms started changing:

"SAI-GORILLA-ZO!" The red, yellow, and green rider turned into an all gray, more armored form.

"TRIAL!" The crimson rider shed off some of his armor and turned into a blue form.

"BUFFA GO!" The golden rider gained an orange mantle adorned with a buffalo head on his right arm.

"Shoot Vent!" Large shoulder cannons spawned on the green rider.

"Connecting..." The black rider started turning red, and his chest plate turned bulkier.

More riders joined in after the chant. The first adorned with rhinoceros beetle horns on his head, the next looking more organic and resembling a grasshopper, another with a helmet resembling a piranha and finally an axe wielding silver and purple rider. The grasshopper-like rider let out a roar to sound off the start of the charge. The nine riders cleared the path in their own unique ways- the gray one is able to control gravity from banging his chest in a gorilla-like fashion, lifting the foot soldiers up in the air. This gave the formerly crimson rider easy pickings with his super speed, allowing him to hit the much more easily. The golden rider charged through groups of soldiers with nearly unstoppable momentum, with the green rider giving cover fire with his cannons, so that the beetle-horned rider can unleash a large electric shock on the ground for the silver rider to swing his axe into, with the grasshopper and piranha riders hacking and slashing through groups of enemies. The rider with the cannon is the one who is able to give the biggest impact, as he is able to unleash entire streams of energy to clear hundreds of soldiers at once.

As the riders were raiding the base, another group of heroes just so happened to be raiding another base in another universe...

The Savage Lands- HYDRA Headquarters

The other raid has gone well underway at this point. A man with steel skin and a man of orange stone skin slams onto the ground, causing a shock wave that knocks away dozens and dozens of soldiers dressed in green. A man on fire flys through the air, igniting the poor souls under him aflame while a raccoon holding guns much bigger than itself launched canisters of Napalm. Nearby, a nine-foot-tall green monster of a man was standing back-to-back against a twelve-foot tall humanoid tree while both are taking enemy fire, progressively getting the green one angrier and angrier... until he snapped.

"HULK SMASH!" The green one yelled, smashing his way through the soldiers. Seeing his opportunity, the humanoid tree followed suit.

"I. AM. GROOOOOOT!" The tree yelled, slamming his hands through the ground and making tendrils pop up through the surface of the floor.

Leading the raid man is a man adorned in red, white and blue with a shield decorated in similar colors. Behind him is a man in gray wearing a visor, fighting against waves of the soldiers alongside him. They are currently raiding an H.Y.D.R.A. base, a known terrorist group that has been causing chaos in the world for over a century now. "I'm glad you can set aside our differences for this, Scott." The patriotically colored man said to the visored man, throwing his shield at a nearby crowd. "We need as much help as we can get."

The visored man fired a ray of telekinetic force from his eyes before looking back. "Don't get used to it. We're only here because, if what you're saying is true, every single mutant life is in danger." He says before throwing a right hook towards a soldier attempting to attack him from behind. "And not just the mutants in this reality."

As the battle rages on, a squad of soldiers in heavy-duty armor suits approaches. They begin to fire lasers wherever they can see anybody, disregarding whether it's an ally or an enemy, in an attempt to control the situation. A brunette woman with a white streak in her hair was grabbed by an armor in an attempt to crush her. "Aw hell naw sugah', that ain't happening!" The brunette yelled, grabbing hold of the arm's elbow and ripping it off, flying away as she throws it down into the ground. Try as they might, the armors can't seem to be able to hold the invaders down. The soldiers within the armors realized this, so in retaliation dozens more panels in the floor opened up to bring about hundreds more of the armors. This was bad. No matter how many of them they destroy, two more seem too replace each one. Something had to be done.

"Thor, I need you to clear the room!" Yelled the patriotic-colored man.

The visored man nodded. "Storm, offer help if you can!"

Nodding in agreement, a blond-haired man wearing a cape while wielding a hammer and a white-haired woman wearing black tights fly up to the roof of the building, summoning a large, black cloud overhead. Their eyes glowed with power as they channeled their powers into this thunderstorm.

"Clear out of the way!" Yelled the woman in black, as they brought down a booming lightning strike upon the room. A man covered in ice began forming a shield around everyone, which was barely enough to protect them. When the storm settled, all that is left of the suits are just smoking husks.

"Well, that was a job well done. Though I prefer it done medium rare." A man in a dark red and black costume snarked. Nobody laughed. He turned to his left, as if he's looking into a camera and narrowed his eyes. "I'll get you for this SupahSpeed777."

They move forward, coming across gigantic steel doors. To its right are a keyboard and console. A man dressed in a white jumpsuit stretches his way to the console in an attempt to crack the code to unlock the doors. As he begins typing, a marching can be heard coming from behind him, signaling that additional forces are incoming. Everybody gets ready to fight back, as the army gets closer and closer.

"Reed, you think you can type any faster?" Says a man clad in a red and gold armor, firing pulses of energy to hold off the incoming army.

The stretchy man keeps typing on the console, giving a disapproving stare towards the metal man. " I don't understand why I was the one assigned to break the key code, seeing as how you are the most technologically inclined out of all of us."

The man of metal looked behind him towards the door. "You know what." The metal man flys towards the door, and then begins charging up his central power source. "I think I will open the door with my technological knowledge. Just in a different way." He then unleashed a large beam of energy from his chest, destroying the door within seconds.

"Always the improvised thinker, Stark." The man in white said sarcastically.

"You's take who you need up ahea', we's can handle dem!" Yelled a red-eyed man in a trench coat, knocking people off with a kinetically charged bo staff.

The man in Red-White and Blue nodded. "Strike team A, let's go!"

The patriotic man, Captain America, ran through the gates- following him are the visored man, Cyclops; a woman in a white jumpsuit, Invisible Woman; a man clad in purple with equipped with a bow and special "trick" arrows, Hawkeye; a silver-haired man in a blue suit with a lightning bolt striking diagonally through the chest, Quicksilver; and a man in a red coat, boots and a breather mask, Star-Lord.

Inside, they find a man wearing a black trench coat facing his back towards them, the coat itself has a coat collar big enough to obscure the his head. Behind him is a large symbol of a skull with dozens of tentacles coming under it.

"Oh?" He says, turning around to get a better look behind him. With his face facing to the back, his most distinct feature shown: a barren, crimson-skinned face, lacking nostrils, lips, eyelids, and hair. This feature is what has given him his most famous alias- "The Red Skull"

"Well well, what have we here?" He starts walking in their direction, stepping in an arrogant swagger. "I suppose you're wondering what I plan to do with this?" He lifts up his right hand, in it, he holds a cube about the size of his head. Within it, there seemed to be a blue energy constantly radiating in it, moving akin to that of a heart beat.

"I knew it! You managed to get another cosmic cube!" Captain America stood down, positioning himself for a fight along with everyone else. "We won't let you get away with the same plan again!" However, this is met with something unexpected- a laugh. Not a smug, held back giggle like a villain usually would, but a full guffawing of noise as the Red-Skull looks up in the air.

"You think I'm going to conquer the world again?" He says while lifting the cube up into the air. "No. I'm aiming for a grander scale this time." The Red Skull starts laughing, and as if on cue, the cube starts flickering like the 4th of July, as the room starts phasing different colors and bending in shape. Outside, everybody else is experiencing the same phenomenon. Slowly, the H.Y.D.R.A. soldiers start disappearing, and in their place were unfamiliar faces, looking jut as confused as the others. The symbol behind the Red Skull is changing, seemingly sprouting wings, with the Red Skull slowly fading away. When he finally disappeared, where he was left standing was now replaced with people not of this universe...

Shocker Desert Base- Throne Room

The main door falls down from a single swing delivered from a rider in a deep shade of purple wielding red rekkas, Kamen Rider Hibiki; who is followed by a rider wearing orange armor akin to that of a samurai holding a sword similar to an orange slice, Kamen Rider Gaim; a crimson rider adorned with a beetle's horn for a head crest, Kamen Rider Kabuto; a silver rider with black highlights, Kamen Rider Super-1; a rider with a light green helmet, red scarf, and red gloves: Kamen rider Nigo; and finally the rider that was leading the group, Kamen Rider Ichigo.

The room is empty, with only a large throne adorned with a condor behind it making any sort point of interest in the room. "Great Leader!" Ichigo yelled "It's time to give up your plans! No matter how well you think you plotted it out, the Kamen Riders will always find a way to stop it!"

At first, his heroic yelling is met with silence. But suddenly, a black fog filled the room, with a man in a crimson robe and pointed hood materialized in the center.

"Kamen Riders, so you have arrived." He spoke, not a single tone of emotion emanating. "You think this will be like all of the other times, do you?" He approaches the riders at a slow pace, moving as if he is floating in mid-air. "We unleash our plan to the world, and in the middle of it, you find a way to stop our plans before it comes to full fruition." All of a sudden, the room starts warping, the walls turning transparent, losing color for each second that passes by.

"Great Leader! What are you doing?!" Ichigo yelled, all of the riders getting ready for a fight for their lives. The Great Leader laughed.

"Unfortunately, I'll not be your opponent today." He says as he backs into the mist, disappearing. The Eagle behind the throne starts changing, looking like it's growing tentacles. The fog started disappearing, and in the middle of where it was stood new, unfamiliar figures. The man in the center, dressed in Red-White and Blue, looked towards them.

"You there! Are you one of Hydra's newest soldiers?" He yelled. Something didn't feel right. Captain America didn't know what was going on, but he knew the strange people in front of him had something to do with it.

Ichigo clenched his fists, confused by the situation brought upon him. Before he can say anything, a sharp pain filled his head."They must be another Shocker experiment." He thought.

"NO! I am as you are- an experiment of Shocker!" Ichigo yelled, his arms slicing through the air to make a point. "Unlike you, I have broken free from their grasp and now fight for justice!" He readies his stance for battle.

"Ichigo-sensei?" Gaim asked, with the other riders looking in shock. "Are you feel-" Just then, Gaim felt a sharp pain in his head. "Yes." He thought to himself. "That must be it." The other riders felt the pain also, and felt a similar feeling to the situation.

Cap, confused replied back "Shocker? What is that? Another sect of the Nazis that split off from them?" A sharp pain then went through Cap's head. "No matter, your skewed sense of "justice" is just the kind of thing a deluded Hydra lackey would say." Cap said rather unnaturally. Cap prepared his shield.

The other Marvel heroes looked at him strangely for a second, until they also felt a sharp pain in their heads. They now knew what they had to do.

"AVENGERS- ASSEMBLE!"

Captain America threw his shield, with Kamen Rider Ichigo jumping in the air to dodge it. Seeing an opportunity, Star-Lord uses his rocket boots to intercept him. "You know, you're the only Avenger here" he whispered under his breath, getting ready to air-tackle Ichigo. Suddenly, he is shot out of the air from flames spewing out of Hibiki's rekkas. With Star-Lord down on the ground ,Hibiki closed in on his opponent for a finishing blow. Just before he swung his rekkas Invisible Woman ran towards Star-Lord to protect him with a force field, knocking Hibiki off-balance. In response, Gaim came forward to assist.

"This is my stage now!" He yelled, switching an orange lock inside his belt for a yellow lock.

"PINE!"his belt yelled, as his sword disappeared, being replaced with a flail resembling a pineapple. His armor also changed into a bulkier yellow armor with large shoulder pads. He brought forth an onslaught of swings against the force-field, causing cracks to appear.

"Eat this, and that!" Gaim yelled, as Hibiki regained balance and removed his belt buckle. He placed it on the force-field, having it expand to resemble a drum. Hibiki then started beating down on it in specific rhythms. Each beat that was thrown by Hibiki made bigger and bigger cracks on the force-field.

"Peter, I don't know how much longer I can hold this up!" Invisible Woman yelled, straining to keep it intact.

"Well then..." Star-Lord took hold of his guns. "I guess it's time we reverse their momentum."

Invisible Woman nodded, and push her force field forward at the last possible second, giving Star-Lord the chance to catch let loose bolts of lightning at them. Gaim lay stunned while Hibiki blocked the shots with his rekkas. One-on-one against Star-Lord, Hibiki set his rekkas aflame and threw fireballs at Star-Lord, to which Star-Lord countered with a freeze ray.

"Who's going to let up first?" he yelled at Hibiki, who kept quiet and concentrated on his flames. "Man of few words, got it." Star-lord shot the ground and caused a small earthquake under Hibiki, making him lose his focus.

Gaim got back up and noticed Hibiki needed help, so he dashed his way over. Invisible Woman wasn't going to have that, and enclosed Gaim off in a force-field. Gaim, in an attempt to break through, hit it over and over again. "Not so tough without your buddy, are you?" yelled Invisible Woman.

Gaim looked at her and pulled out another lock. "Kachidoki!"

"Don't think it's over just yet! I'm truly making this my stage now!"

"Kachidoki Arms! Iza Shutsujin! EI, EI, OH!"

His armor changes into an even heavier looking orange armor, with the flail replaced by a heavy shotgun. Gaim scratches a disk apparatus at its side, which makes the shotgun sound out music. He turns a nob next to the disk, causing the music to go at a higher frequency. He then unleashes a steady stream of fire, causing heavy damage to the force field for every hit. Each time Gaim destroys it, Invisible Woman makes a new shield. It tires her out, but Invisible Woman knew that he had to keep him at bay, lest she let him unleash his power on the field.

At the same time, Super-1 utilized his Five-Hands system to keep up with Hawkeye's many trick arrows. "RADAR-HANDS!" He yelled, his gloves turning gold.

"Who needs radar with an eye as good as mine?" Snarked Hawkeye, unleashing a round of arrows. Super 1 dodged it and countered by firing missiles from his gloves. "Shit" Hawkeye back-flipped out of the way, letting lose some explosive arrows. "Two can play at that game, you son of a..."

Super-1 responded accordingly. "THERMAL-HANDS!" he yelled, his golden gloves turning green. He fired off a flamethrower, making Hawkeye's arrows explode before they can hit him.

"You want to play that game, huh?" Hawkeye was starting to get annoyed. He pulled out another arrow that looked just like an explosive arrow and fired it. Super-1 released a flamethrower, but instead of an explosion, a smoke cloud enveloped the around Super-1. Confused, Super-1 looked around the smoke cloud. All of a sudden, he felt something twisting his right arm and let out a yell. Hawkeye kneed Super-1 in the back, causing Super-1 to fall down face first. Hawkeye leaned closer to his head. "Sorry for having to play dirty..." Hawkeye whispered.

"Don't worry," Super-1 whispered back. "now I know where you are."

"POWER-HAND!" Super-1 yelled, his gloves turning red. He used his free arm to let out a punch that had enough force to shake Hawkeye and the smoke cloud away from him.

Meanwhile, Quicksilver and Kabuto had a stare-off with each other. "You think you know what will hit you?" Quicksilver proclaimed. Kabuto responding by lifting his right pointer finger to the sky. And began reciting godly words.

"My grandmother once told me..." Quicksilver let out an annoyed sighed and punched him in the stomach, kneed him under his chin, and finally performed a sucker punch all the way across from the room, leaving Kabuto flying in the air and finally landing on the ground. Quicksilver let out a smirk. He had a right to, it took him only .72 seconds to perform.

"You didn't see that coming?" He said, putting himself in an arrogant stance. Kabuto looked back at him, and though his helmet can show no expressions, Quicksilver knew that he had a look on his face that said: "You made a big mistake."

"What you fail to see that I am the lord of speed."

"CLOCK-UP" His belt yelled, as he started punched Quicksilver 12 times in the ribs, uppercut him across the neck twice, and finished with a roundhouse kick, sending Quicksilver straight across the room. All of this done in .33 seconds.

Outside, the other riders and Marvel heroes are having their own encounters too. The incredibly strong green man, Hulk, had a particularly interesting one.

One minute he was about to punch a new one through a Hydra armor, the next minute his fist collided with another fist, creating enough impact to shock the room. He stared intently at his new opponent, looking straight at his beady eyes, red chest plate and golden horn. He is about the average height for a man, and his body didn't seem that strong by super-human standards. The Hulk thought that this was going to be easy pickings. Hulk was about to completely overtake him, but then a crackle of electricity started covering his opponent's body, until the red rider turned into a black, heavily armored version of his previous form. He started to overtake Hulk and then proceeded to gut punch him, making him fly straight into a wall. The mighty Kuuga dusted his hands.

Things got even more hectic, as the wild-card Chalice started a fight with Gambit, Fourze's attempt at friendship was misinterpreted by Captain Marvel, Iron Fist and Meteor had a fight of fists, and Blade the vampire hunter seeks to put a stake through fangire-prince Kiva.

Back in the center room, Captain America grabbed his shield in mid-air before Ichigo can finish his rider-kick, allowing Cap to block it. Ichigo was left slightly dazed from it, but managed to recover, Nigo standing by his side. "Well Scott, I guess it's a two on two fight."

Cyclops nodded. "I'll take the one in red." They ran forward, with the Double riders charging towards them. Time seems to have slowed down for them as they got closer and closer to each other, and then...

They all disappeared. The bases disappeared too. Nothing is left. Not the Red-Skull, the Great Leader, or the foot-soldiers.

All that is left is the symbol of a new covenant formed.

The Shocker-Hydra alliance is born.

So that is the prologue! Pretty long for a prologue if I say so myself.

Okay, just to get it out of the way: ALL of the main Kamen riders will appear in the story, and I plan to give them equal importance (for the most part). The main Avengers (and by that I mean the ones given focus in the MCU) are going to appear, along with the Fantastic 4 and some of the X-Men. I will have some of the secondary riders appear, but I can't guarantee all of them (Rider-Man is safe, BTW :P). I won't reveal who else I'm going to have in the story now because I want to save it as a surprise.

Well, that's all for now, expect chapter 1 (starring Peter Parker) within a week-and-a-half!

~Supeed

EDIT: Fixed some spelling and grammatical errors along with updating some parts of the story.

7/30/15

EDIT: I re-read the entire chapter, and some parts just... bugged me. A lot. So I went and re-tooled the prologue by a good amount these past few days (it's nearly twice the size now). I hope this improves the reading experience for whoever is reading this :)

8/2/15