AN: Well, this is my first fanfiction story, so please leave constructive criticism. I do not own RWBY or Sonic. Shoutout to Child at Heart Forever, who inspired me to actually write a fanfiction story instead of just reading it.

Chapter 1

In Vale, there is a prophecy that has been passed down from generation to generation. This prophecy states that Remnant will one day receive unexpected visitors. One is a madman who will stop at nothing to achieving his goal of universal domination, and he will do anything to achieve these dastardly goals. However, the other visitors are enemies of this mad scientist, and they, with the help of young warriors, will stop him and derail his plans. These newcomers will be mistrusted by many at first, but everyone will see the light these heroes bring to this monster-infested world.

In orbit above Mobius-

"GAHAHAHAHA! Finally my plan has come to fruition!" proclaimed an obese individual in a red coat, goggles, glasses, and a huge orange mustache. This individual has caused many problems for the people of Mobius, so it's really no surprise that he is at it again. The name of this individual is the brilliant but psychotic Dr. Ivo Robotnik, but he is forever doomed to be known as "Eggman". He has made multiple plans to subject the world of Mobius to his tyranny, but his plans have always been foiled by a certain hedgehog.

Eggman was currently standing in his latest attempt at world domination, which was a space station not unlike Space Colony ARK, but with more power focused on the planet destroying Eclipse Cannon. On his left and right were his ever present robot assistants, Orbot and Cubot. Orbot glanced up at Eggman and intoned gravely, "Oh dear, now you have done it, doctor."

"Why is that? Surely the Sonic Heroes will not reach me up here. Besides, I have an army of robots poised to destroy them even if they do reach the station!" Eggman proclaimed.

"Two things, doctor. One, don't call me Shirley, and two, just look outside!" Orbot managed to say with panic and annoyance simultaneously.

"Eh?" Eggman looked on the security feed and much to his surprise, he saw a large group of mobians in the vehicle hangar of the station. This group consisted of some of Eggman's greatest enemies:

Sonic, the blue hedgehog with the super speed and quick witted tongue.

Tails, the two-tailed fox with an IQ rivaling Eggman.

Knuckles, the last Echidna who wasn't that smart, but made up for it with strength and loyalty.

Amy Rose, the pink hedgehog who wielded her deadly Piko-Piko hammer.

Shadow, the black and red hedgehog also known as the Ultimate Life Form.

Rouge, the white bat known for her thieving skills and love of jewelry.

E-123 Omega, an Eggman robot with a vendetta against anything Eggman related.

There were also two faces that Eggman did not recognize right away, but we know them as Blaze, the purple pyrokinetic cat, and Silver, the psychokinetic silver hedgehog. Apparently, Eggman's scheme was so big that the Sonic Heroes called upon the help of the couple from the distant future.

Surrounding the group was something Eggman was all too familiar with: huge piles of broken robot parts. Some were still sparking, while others were unrecognizable blobs of metal.

"Ahahahaha, I knew they would get through those worthless scraps of junk! I was just… just testing them! That's right!" Eggman said unconvincingly. Cubot looked at him at said in a high pitched voice, "Hey boss, are you sure we are safe here? Those guys look like they are coming here pretty quickly."

"Of course we are safe! I knew they would get through those useless pawns, so I made a backup plan!" Eggman punched a button on the console in front of him. "Badniks! Attack Sonic and his puny friends!"

All around the station, ports in the walls opened up, releasing robots of various shapes and sizes, mostly of large insects.

"Gahahaha, let's see them get through these!"

"Seriously? Badniks? Come on, Eggman, let's see something a little more original!" said Sonic as he spin dashed from one Badnik wasp to another.

"Uh, Sonic? What the heck are those things?!" Silver asked, more than a little freaked out by the appearance of new robotic monstrosities. He used his psychic powers to catch wasp stings from the air and sent them back at the owners, causing them to explode.

"These are Badniks. They are very primitive creations of Eggman, back when he was called Dr. Robotnik", Omega said over the roar of his machine guns. "They are powered by small animals, like the robots in the early E-series."

"Enough history lessons, let's destroy them all!" shouted Shadow, firing Chaos Spears everywhere.

"Tails, how is that portal coming along?" asked Sonic, who was currently running around destroying Badniks still.

Tails was currently on the ground, dodging lasers and missiles while tinkering with a remote. "Almost… Got it!" shouted Tails. A large sphere of light appeared above the ground, and the released animals from inside the Badniks sensed that safety lay in that light. The other end of the portal was located on the surface of Mobius, more specifically on Angel Island, so there really was a safe place for them. Well, as safe as an island that floats due to the power of a huge emerald gets, when it isn't smashed to pieces or being stolen by a certain white bat….

Speaking of Rouge, she and Knuckles were currently back to back, the former kicking while the latter was punching robots like no tomorrow. "They just keep coming!" Knuckles shouted while punching a robot in the head. "Getting tired, Knuckie? I thought you had more stamina than that," Rouge said flirtingly. Knuckles just grimaced in annoyance.

All of a sudden, there was a bright light and intense heat. All the robots in the hangar were destroyed, and the animals fled to the safety of the portal. The culprit was Blaze, who still had fire in her hands. "Come, friends, we must leave this place. Too many lives are at stake," the pyrokinetic cat said.

"She's right, we need to get to the control room," Amy said, dusting off her red dress.

"Then let's go!" Sonic said, speeding off to the control room, with everyone else not far behind.

"Uh, Doctor? They seem to have destroyed all the Badniks," Orbot said with panic in his voice.

"Hmph, worthless creations," Dr. Eggman harrumphed. "No matter, I have all the Chaos Emeralds, and now nothing can stop me from building the Eggman Empire from the ashes of the old world!" He punched a big red button on the control panel in front of him.

All around the Egg ARK, the lights slowly dimmed, with all power being directed to the primary cannon. In the core, the seven Chaos Emeralds shone brightly, their power once again being used for evil deeds. All of a sudden, something sparked, and the Emeralds started pulsating wildly. A bright light started to expand around the Emeralds, and then the entire station was lit up. Shadow, being in tune with the Chaos Emeralds and their power, sensed something was wrong in an instant.

"Brace yourselves, everyone! Eggman's machine has caused a massive Chaos Control!"

Everyone stopped running and jumped to the floor, grabbing at anything to hold on to. Oddly, while everyone else was in a panic, Sonic seemed the most calm about the whole ordeal. Not too surprising, considering this happens to him almost on a regular basis

*Sigh* "This is gonna suck," Sonic said deadpanned. Then the light completely surrounded the station.

On Mobius, everyone saw what happened. The Egg ARK was replaced with a bright light, and then it vanished. Nobody knows where or when the station went, but one thing's for sure; Sonic and his friends were not gonna be bored by this new adventure!

Well, tell me what you think. Updates will be random, but I will try to post one chapter every week. I am juggling a full-time job, writing this story, and playing the Mass Effect Trilogy. Kudos to whoever can find hidden references.