Disclaimer: Evangelion belongs to Gainax, Sonic belongs to Sega.

Author's note: That's right. An Evangelion and Sonic crossover. I think it can work! Especially after reading one other Eva X Sonic Fanfic that was actually good, but unfortunately it didn't have Shadow or Silver or any other Sonic Characters besides Sonic and Robotinik and it was also abandoned. Don't know about it anymore (removed from faves and alerts about two years ago) but kept thinking about it all the time (over a year now) so I started writing my own. An entire chapter and the setting is complete.

This was not my first writing experience however, I wrote a couple of Omakes and in-depth content for Gamerjay, and his fic Joutei no Yokai Hoshi, which is a Predator Evangelion crossover (which I recommend to everyone). His work and some words from him were very inspirational for this work. Also, when I was learning English I wrote a Final Fantasy Fanfic (that I never posted…)

Gamerjay is not only one of the inspirations for this, but also the Beta reader. A big shout out of thanks go to him. My sincere appreciation, man!

Now that all of that is out of the way, on with the show:

Chapter 1: The Mobian Quickening.

Sonic fought his way through the hills, forests and even the ruins of Flicky Island once again. His common sense still arguing with him. Not against what he was doing, fighting Eggman would never be a moral dilemma for him, but in a literal common sense of the whole scenario. Why would Eggman attack Flicky Island again? And why would he capture just a few of the flickies, showing more interest in the Chaos Emeralds?

None of this made any sense to Sonic, so he just kept on pushing forward. Enemy after enemy, until he reached a new installation, different from the final area the last time he visited Flicky Island.

"Egg-Dimensional Warper Housing Facility? The egghead must be running out of ideas." He said to himself after bashing the security bots at the entrance and never stopping his run after entering through the facility either.

He spotted the security cameras. Robotnik knew he was coming. This was his highlight, his kind of thrill. Dash through the moats, run through the obstacles, jump with perfect precision from one spot to another, slide for the small entrances. Once again at the apex of another adventure, he smiled to himself as he ran through the traversable building until he eventually reached a familiar type of room. It was long and spacious, in a circular corridor type of fashion. This was usually where one of the Giant talking egg's biggest creations was at.

True to Sonic's inner prediction, all of a sudden a big shark like metallic structure was hovering above him. The 'Egg Shark' he read in the robotic plate in its belly.

"Eggman is really running out of ideas." Sonic grinned as the metallic giant floating fish started subtle movements. "Alright ya big fish, let's do this!"

The shark didn't roar or made any type of animal sound. His engines and general floating devices however, made several types of powering up sounds. Spinning and banging pieces of engines sounded from inside the fearsome metallic beast and it started flying through the corridor in the same manner and speed Sonic was running through it. Sonic knew better than to just accelerate straight to him.

True to Sonic caution, the first attack was its. At first, just a simple bombing attack fell from the Shark fin openings to the side. Nothing Sonic couldn't handle, having to just dodge the explosions side dashing one body spin. More speed was spent when he used his boost and as he approached the Egg Shark, laser beans were shot from its eyes.

The form of a shark's eyes being more flat than usual made it possible for the laser to sweep the entire ground, but Sonic simply jumped. At the very last millisecond but jumped nonetheless. The egg Shark then flew diagonally, making the sweeping laser harder to avoid, but Sonic boosted again in mid-air.

His Sonic boom left broken wind in its wake and he reached the metallic giant fish. Noticing the dissolving of the energy in the Egg Shark's eyes, going from glowing red to dark grey slowly, Sonic thought that was the vulnerable spot. So upon touching the ground, he jumped again and launched himself in his trademark homing attack to the eye of the beast. It cracked and the Egg Shark flew backwards twitching as if in severe pain, the engines inside of it going crazy.

"Ha! This will be cake!"

True to Sonic's words, he just had to repeat the patterns until both eyes of the Egg Shark were destroyed, along with its owner.

Just mere seconds after the Egg Shark started exploding, Sonic came across a large door that read 'Dimensional Chamber'.

Sonic smirked "That looks important." And it was all he said before smashing it over and over again until it laid open before him.

"Eggman!" He shouted upon seeing Robotnik.

(SGE)

Doctor Ivo robotinik stood before the machine with uncertainty gnawing at his bones. Unlike all the other times he stood on the threshold of an important decision, he did not know all the variables and possible variables of the equation.

The device before him was a huge magnetic chamber, composed devices and set pieces that seemed to be for both containment of energy and enhancement of it. In the very center of the chamber was a portal like structure, in the form of a metallic tube, extending as far as half the size of the chamber, roughly five meters in length. The circle itself that it formed wasn't small either, being a circle of four meters of diameter, big enough for his Egg-o-Matic (and most of the adaptations for it).

The panel before him was showing off sets of words and equations that made absolutely no sense whatsoever. And for a genius with IQ of 300, that was saying a lot.

"Just what the hell kind of dimension did you find, my egg-dimensional warper? I don't know what these numbers mean! I don't even know what these names mean! I hate not knowing!"

This wasn't like sending a hit squad or egg bot against the pesky hedgehog. Eggman actually had no idea what the indicators of the type of dimension were showing, nor had any clue about the names indicated in the dimensional markers.

He just knew the names were important somehow. For them to be identified as words, even though they appeared through the algorithm trades of the dimension finder, they had to be important.

"Hmm, angels, lilim, second impact, dead sea scrolls, Adam, Evangelion, nope, they just don't add up, not even under the religious group. Guess I can't really judge this alternate dimension, after all it is a different reality." Eggman pondered to himself as he gazed once again at the mess of numbers and equations that indicated the general making of that Dimension.

"Making this installation here was no trouble. I knew the land and the power of the pesky birds I had tried to capture once. But being unable to get decent readings on the dimension I would spot using their power was not anticipated." He banged lightly in his board. "All the trouble using the inter-dimensional properties of Flicky Island to build and power up the egg-dimensional warper and I don't even know if I can succeed! I have to-"

He was then interrupted by the familiar sound of speed blowing through metal, the sound he heard so many times before, the sound of the hedgehog destroying his creations. "Rats! Can't even borrow the Chaos Emeralds and a few flickies without the hedgehog coming in to ruin the party."

Indeed he spotted the familiar blue blur running through his traps and bots in his security cameras. He knew he was still afar, knowing the location of each camera. He also knew how fast he could be in reaching his goal.

Few were the occasions where he hurried the way he was now. When it came to calculation and finishing his work, he liked being thorough. Meticulous. But there was no time, his nemesis would be there soon. Ignoring the unknown numbers and whatever they indicated, he finished his calculations and turned on the dimensional warping device, along with its rudimentary (rudimentary only in Robotinik's terms) A.I. and asked "Computer, state coordinates and transportation status."

"Designated reality augmentation process completed. Warping capabilities at maximum capacity. Ready to warp in Egg-o-Matic into designated dimension." Answered the A.I. in its robotic voice.

"Excellent. Now, due to the complicated setting the search algorithms found, having stumbled even upon words, you cannot determine where I will be, correct?"

"Affirmative. Locus acknowledgement not possible under current knowledge status of alternate dimension."

"I was afraid of that." The security cameras showed his dreaded foe closing in. "Curses! Deploy the Egg Shark!" He shouted at a different part of his panel, and the last security camera, just three screens before where his enemy was at, showed a huge fish like airborne machine being turned on and released like a fully charged balloon.

"Alright computer, can you at least determine a location that is functional according to the regular parameters of placement, so I don't warp in up in orbit or under the ground?"

"Affirmative. Basic locus configuration input possible within current status of dimensional knowledge."

"Excellent!" He looked to the camera showing his deadliest and oldest foe battling the Egg Shark. "I have won Sonic! Keep you stupid world, your precious Mobius! With the dimension I found through the egg-dimensional warper I will have control over the most powerful god like weapons there are! It doesn't matter that I won't know where I will be, or that I don't know about the strange words and symbols the dimensional reader found! It will be a dimension with god-like weapon possibilities AND without you to get in my way! Hohohohoho!"

As if to answer his self-explanatory self-indulging monologue, there was a loud bang from the screen, the same characteristic bang of a super sonic object hitting metal.

"Rats! He's figured out the Egg Shark's attack pattern! Only a matter of time before he trashes it now…" He turned back to the control panel. "Computer, start warp in sequences!"

"Commencing warping in sequence" And so, announced by the metallic voice of the A.I. and driven by a megalomaniac's ingenious lust for power, the middle of the huge metal tube in the chamber that appeared to be unfathomable sparked small dots of light that slowly became energy beans. The energy beans started concentrating until they formed a somewhat built out of light structure in the entire insides of the tube like structure, but still contained within it.

"Sequence at 25%" The energy sparks itself appeared to start vibrating.

"Sequence at 50%" The vibration eventually became a blurred image.

"Sequence at 75%" The blurred image became more visible. Eggman started to make out what seemed to be the arctic pole of a world, but something seemed off.

"Sequence at 100%. Ready for transfer. Please proceed through Egg-dimensional warper entrance." The image became almost completely clear. Eggman saw what indeed seemed like the extreme north of a planet, and icy landscape of snow and cold. What was off in this image though was the fact that there was more water and destroyed ground the usual.

No Time to ponder on it. He thought to himself. Soon the hedgehog is going to be here, I gotta go through- The crashing and explosions coming from the final security camera interrupted him.

"He already defeated the Egg Shark?" Robotinik Asked to no one in particular, sounding more afraid than he wished.

"Eggman!" Called a voice he dread as much as how long he knew it, by his side, the chamber doors exploded, revealing a pounding blue ball, moving very fast, until his counterpart stood behind him, and the chamber with a trans-dimensional portal ahead of him.

(SGE)

And the usual evil Sonic knew so well, the same wicked grin he had seen so many times before flashed several feet away, too far away for Sonic to react. "You're too late, hedgehog. The Chaos Control will activate and I will be away from you for good and Eggman Land will be a reality elsewhere!"

True to Robotnik's declaration, Sonic saw the familiar light of teleportation in a tube like structure just behind him. Only, the center of it showed an image of an icy wasteland like landscape. It didn't actually look like a different world, but Sonic saw no reason to not believe Eggman's usual cocky declaration of near victory.

So, at the same micro instant the Egg-o-Matic turned to go towards the portal, Sonic Homing-attacked the control panels of the machine repeatedly.

"NO!" Yelled Eggman.

On the contrary of Sonic's expectations though, he didn't stop his advance and entered the light even if it started fading, and the machines around started going haywire.

So as usual, Sonic didn't hesitate in doing whatever was in the moment. And at that moment, what was in it was to follow Eggman. One second after Robotnik disappeared, Sonic got inside the portal as well. He thought he saw a dark and red figure just a few feet to his left and a silver blur just behind him briefly.

He couldn't ponder on it even for a second, because at the moment he was engulfed by the light, everything went black.

(SGE)

This is too easy… Shadow thought.

GUN would never tell him to infiltrate the egg-dimensional warper facility without a probable reason. Granted, a grand scheme from Eggman usually made GUN take precautions. But a facility this easy to infiltrate… This just doesn't add up. Why would Eggman house anything important here? A human spy with a big cardboard box could penetrate this fortress…

His musings didn't slow him down or deferred him from his goal. He continued his descent into the bowels of the Egg-Dimensional Warper Housing Facility. He heard the sounds of gunfight and super speed bashing on metal.

Hmmm… the faker must be the one making my job easier. Still, he alone wouldn't deter this much attention away from me… Someone else must be here…

He then shut off his own thoughts, focusing on the main issue, reach the facility's core, where the supposed dimensional warper was at. Whether or not Sonic, along with someone else, was here was irrelevant to his mission.

He finally reached an area not reachable by ventilation vents. An area this difficult to get in and so further inside the facility must be where he was supposed to go. Just copy the data regarding the Egg-Dimensional Warper construction, erase and leave, huh?

He then picked up the tablet like device and started hacking the door before him. As it was about to open, he hears a loud bang inside the room, followed by a screaming voice he easily recognized.

"Eggman!"

Even if muffled by the huge steel door before him, Shadow recognized Sonic's voice and the anger in it. Luckily the hacking would be done soon and that same door would open.

"You're too late, hedgehog. The Chaos Control will activate and I will be away from you for good and Eggman Land will be a reality elsewhere!" That declaration from Robotinik however, worried Shadow. Not because of the safety of another world in another dimension but because he knew Sonic well enough to know that his next actions, in response to that, would be to try and destroy the machine he was supposed to get the construction plan's from.

"NO!" That exclamation from Robotinik only confirmed what he already knew.

This is not a stealth mission anymore. If the faker destroys the machine, I'm gonna fail. With that thought, Shadow busted the door open with a loud bang from his strongest homing attack, followed by a lot of kicks. He couldn't process the metallic enemies that finally became aware of him, or the sight of Eggman escaping with Sonic in pursuit before him. He was engulfed by light. A light he recognized from Chaos Control.

And everything went black.

(SGE)

"Tell me again why I have to do this, Blaze." The Silvery hedgehog bristled.

"The past is endangered. It usually IS you who saves it…"

"But you're not telling me a whole lot this time. AND you're also saying you're not coming with me.

"I have things to mind here."

"That's not the point! Why can't you just tell me what is supposed to happen? It is the past isn't it?"

"This time it is not quite like that Silver. You are going to the past but there is a factor that makes it unknown to this world."

"What would that be?"

"This world."

"What about it?"

"That's the answer to your question."

The purple cat and the silver hedgehog stopped their march when the Hedgehog halted and made a confused face, which was something extremely unusual for him.

"I don't understand."

"Unknown to this world. That's the answer, Silver. You are going to another dimension, apparently."

That made Silver do something even more uncharacteristic of him. He jumped. Couldn't hide the Shock in his face. "But… do I get to come back?"

"This is just a small step. A ripple in the grand scheme of things."

"So, yes?"

She couldn't help but smile. "You always do…"

For a moment it was there again. The unique sensation he would get when with Blaze. But then Silver was struck by the same longing that struck him before setting off to do something. Because he knows the moment he has to go is the moment his unique sensation is gone. No breaks from what has to be done, no spin offs, no twists.

This was who Silver the Hedgehog was. This was also who Blaze the Cat was.

And as if to confirm the convictions of them both, Blaze just shoved the white Chaos Emerald to his chest and activated it. "Remember what I told you before!"

"Yes. The Emerald will only take me back in time. I need to complete the transfer when I get there." He then added with a grimace: "I understood what you meant only now that you told me it's another dimension, by the way…"

"Yes, and when the travel through time is complete, the emerald will disappear, for you will be in the same place where it was at the past."

Silver smiled to himself. It always amazed him that the white Chaos Emerald, the time emerald he always used, could bend time like it did and remain one single entity. Whenever a Chaos Emerald would find it's alternate self (in this case being a time divergent) they would merge into one, at the same time period. This could be a bit of an inconvenience, depending on the situation, but the astounding ability of the gem amazed him nonetheless.

"Good luck, Silver."

He barely registered what Blaze told him before bracing himself for the usual punch and tugging around that time travelling meant. After he got over it, he barely had time to register the actual physical space around him, for he was surrounded by security bots.

"Crap…"

The attacks came in a giant 360 degree turning flurry. Luckily, Silver was completely 'charged' by the chaos energy required to bend time, even though the emerald was no longer with him. He activated his psionic ability and every single projectile of that giant flurry was stopped…

"IT'S NO USE!"

…and sent back to the bots and weapons that fired them right after Silver's war cry.

Amidst the dozens, maybe hundreds of explosions around him, Silver noticed this area was so heavily guarded for a reason. The reason was right in front of him. Just eyeing the huge door with the sayings 'main entrance: Egg-Dimensional Warper Chamber' gave Silver enough context and there was no hesitation or doubt in his mind and actions.

Disregarding the other sentries that were coming for him, Silver focused his psionic energy into the biggest projectiles he could find, while putting in a few bombs and ammo crates as well. Without a doubt the big pieces of metal, bombs and ammo crates that were tossed by the invisible force of his psionic power.

He managed to damage the door somewhat. Rats, I'm gonna be throwing projectiles at it for hours before I open it. Gotta do this the old fashioned way.

Silver started fighting back the other sentries and bots that came for him. All the time he also looked around for a very specific type of control panel.

When he spotted it, he levitated towards it. Dodging the attacks and enemies was no small feat. He was literally swarmed and probably would have fallen without the initial boost he received from the white Chaos Emerald to time travel.

Just in the nick of time his psionic power hacked into the electrical mainframe until Silver felt the very distinct sensation of the main cord in it, commanding it to function. A moment later, the door started roaring, tumbling down.

The dent made by Silver's previous attack was actually convenient, for when the downing of the door reached the bent and partially destroyed part of the door, it actually started rattling and squeaking, metal scratching metal. But it was open enough just for Silver levitate himself through it.

No time to rest, however, for when he finally reached the main chamber, what Silver assumed was the Egg-Dimensional Warper was already active. Dr. Robotinik was inside of it, Sonic the hedgehog just behind him. From the other side, through the back door, Shadow the Hedgehog was also Jumping towards the active cylinder like chamber. Silver could tell it was active for it flashed out a strange eerie light, sort of like the Chaos Control light. A light that was growing and enveloped first Robotinik, then Sonic, and then Shadow.

He kept gliding towards that one inescapable moment and, after engulfing Robotinik, Sonic and Shadow, the lights swallowed Silver as well. And then, everything went black.

Author's note: Next chapter they are already at Eva universe (only the anime will be used here, I like rebuild but I think the anime is better… and the manga, from which I'll get some other elements, is very similar to the anime). And this will be a 'same universe but with alien elements added' kind of thing (but not quite, it's the same characters and events from Evangelion, even if just the anime, but with Sonic in the mix). Ho, and did you guys enjoy my Metal Gear reference? Hehe.

This is the first Fic I'm actually posting. Like I said, the Final Fantasy one when I was younger and still studying English was never posted. Since I never finished it and I knew there were probably A LOT of errors in it because, as I said, I was writing it to learn english, I didn't even started posting it… Maybe I'll finish it now… but probably not… and I'm still learning the posting system of . See you guys next time.