Dimension Mix-Up

Dimension Mix-Up is a crossover series on Youtube created by the youtuber thechocobro. It is a crossover of Calvin and Hobbes, Invader Zim, Frogger, Mario, and Sonic. The heroes come together and form an alliance to save the world from the evil Dr. Eggman, an obese scientist who plans on taking over the world with his army of humanoid robots, called Egg Robos. The series was released in 18 parts from July 18, 2007, till August 22, 2008.
== Plot ==
Weird things are going on. Calvin and Hobbes are wondering why Calvin's mom wouldn't believe they went into the past and saw dinosaurs and are thinking of throwing away the time machine when Hobbes begins mocking Calvin's genius. Angered, Calvin attacks Hobbes, and in the ensuing fight, the duo accidentally activates Calvin's time machine and are teleported away.
Meanwhile, Zim captures his nemesis Dib and reports his knowledge of his mission to conquer the world to the Almighty Tallest, his superiors. Zim then attempts to use a brainwashing machine to erase all of Dib's memories relating to Zim himself and his mission while his robot sidekick GIR is making tacos. However, the brainwasher malfunctions and ends up warping Zim, GIR, and Dib away.
Meanwhile, Sonic is running through a valley when he uncovers a diabolical plan to conquer the world orchestrated by none other than his long-time enemy: Dr. Eggman. However, when he reaches the evil scientist himself, Eggman unleashes his reactivated Egg Robos on Sonic, forcing him to escape Eggman's base. He returns to his friends, Tails and Knuckles, and warns them of the plans, but Eggman appears in his Eggmobile to fight the trio. Sonic, Tails, and Knuckles confront the villain in his small jet, which the Eggmobile is fused to. Sonic eventually destroys the jet and causes it to crash, but Eggman escapes by ejecting the Eggmobile from the jet. When the trio reach the crash site, they find Calvin, Hobbes, Zim, and GIR. Sonic attempts to ally with them while GIR runs off. When GIR finds the chaos emeralds, the alliance is shattered, and the heroes fight to control them. However, the fight is broken up by Shadow, who takes the chaos emeralds. Shadow also reveals Eggman has already set his plan into effect. Eggman then arrives in a walker and declares himself king of the world, but Sonic reveals Eggman's intentions to the heroes and they join together to fight Eggman alongside Shadow. The heroes damage the walker which causes Eggman to eject the Eggmobile from the walker. The heroes pursue Eggman and eventually corner him, but instead of surrendering, Eggman activates a colossal Egg Robo to crush the heroes and flies away on a jet pack. Zim, GIR, and Shadow pursue Eggman while Sonic and the other heroes attempt to destroy the colossus. After a long and difficult struggle, Knuckles manages to disable to computer controlling the robot and destroys the behemoth. However, Eggman reveals the stolen chaos emeralds and escapes by stealing Calvin's teleporter, despite Calvin's attempts to stop him. Shadow gets frustrated at Sonic for fighting when he could have stopped Eggman, but Calvin uses a computer to pinpoint the chaos emeralds' locations scattered across the world, indicating that Eggman was lying and did not steal them. When Calvin's computer fails to locate the seventh chaos emerald, Shadow reveals that he had the seventh chaos emerald safe the whole time. When Shadow asks if the computer can locate Eggman, Calvin successfully tracks him down to the city where Zim was stationed. Shadow uses his emerald to teleport Sonic, Tails, Knuckles, Calvin, Hobbes, Zim, and GIR to the city to search for the chaos emeralds. The heroes arrive in Zim's secret base. Shadow decides to split the group up into two groups: one will track down Eggman, while the other half finds the chaos emeralds. Sonic, Tails, Zim, and GIR, as well as Amy, find Eggman in the underground facility in the sewers and battle him. Meanwhile, Knuckles, Shadow, Calvin, and Hobbes find the first chaos emerald in a pool. Calvin quickly dives in to get it and nearly drowns, but is saved by Knuckles. Shadow quickly grabs the chaos emerald and they head off for the Skool to find the second chaos emerald. Meanwhile, Sonic, Tails, Zim, and GIR attempt to hold Eggman off. Meanwhile, Calvin uses a portable scanner to locate the second chaos emerald inside the Skool's boiler room. Hobbes successfully finds the boiler room and they enter, but are immediately ambushed by Eggman's Egg Robos. Meanwhile, Sonic's group traces Eggman to the surface and split up to find him. Meanwhile, Shadow's group destroys the Egg Robos and searches the boiler room for the emerald, but Shadow is attacked by another squad of Egg Robos. Meanwhile, Zim and GIR find Eggman, who is revealed to be allied with Dib. Dib questions Zim about the emeralds, revealing that he allied with Eggman to find the chaos emeralds. Zim attempts to convince Dib that Eggman is manipulating him so he can take the chaos emeralds for himself, but Eggman lies to Dib that he wants to stop aliens like Dib. When Dib is confused as to whose side he should take, Eggman unleashes his Egg Robos on Zim. Zim is quickly overrun, but is saved by Sonic. Meanwhile, Shadow fends off the Egg Robos as the boiler room's temperature rises as a result of the battle. Meanwhile, Sonic arrives to help Zim and reveals to Dib that Eggman never had the chaos emeralds and Zim was right: Eggman was using Dib the whole time. Realizing this, Dib attacks Eggman. Meanwhile, Calvin, Knuckles, and Hobbes escape from the boiler room, but Shadow stays behind to retrieve the chaos emerald. Calvin attempts to return to help Shadow, but Knuckles tells him to leave Shadow and he will come. Shadow attempts to fight off more Egg Robos while the boiler begins to explode. Meanwhile, an Egg Robo sniper tries to kill Sonic and Zim, but Amy crushes the sniper's head with her hammer. Sonic's group rendezvous with Knuckles' group at the park where Dib and Zim are fighting Eggman. Meanwhile, Shadow finds the chaos emerald and narrowly escapes the boiler room before he destabilizes it. After Shadow reunites with the heroes, Eggman unleashes an army of Egg Robos on the heroes. Zim attempts to convince Dib to escape with them, but Dib refuses, saying he will join him later. Zim reluctantly joins the group and Shadow uses chaos control to teleport the group back to Sonic's home. After their return, Sonic decides to go to the garden and the group teleports there to find the third and fourth chaos emeralds. Meanwhile, Dib, having escaped from Eggman's Egg Robos and saved the city from them, pieces the dilemma together and realizes that the chaos emeralds give anyone unlimited power, and seeks to use them to bring Eggman (and possibly Zim) to justice. Meanwhile, upon arrival, Calvin tracks the chaos emeralds with the scanner and tracks the third to a canyon temple. The group arrives to discover a legend that something of great value is contained within the temple and is replaced every two years. The legend also reveals that anyone who attempts to retrieve the object will not survive. The heroes also figure out the value has been replaced very recently, which Hobbes deduces is the third chaos emerald. Meanwhile, Dib asks his father Professor Membrane, a scientist, to create a machine to warp into other dimensions, but Membrane tells Dib that teleportation is too risky. Dib then contacts the swollen eyeball agency to translate a power signature in hopes of tracking down Zim. Meanwhile, the heroes are attacked by a crocodile. During the fight, Sonic, Shadow, and Tails discover an underground stairway and decide to look for the emerald while the other heroes fight off the crocodile. Sonic, Tails, and Shadow reach the chamber below to find Zim injured and GIR inactive. Zim warns Sonic that he is in a trap, but before Sonic can question him, the trio are attacked by Metal Sonic, who had attacked Zim and GIR and was sent by Eggman to retrieve the three chaos emeralds. The trio refuse to hand them over and fight Metal Sonic. After Shadow forces Metal Sonic into retreat and defeats him, Sonic and Tails find the third chaos emerald and take it, but they inadvertently trigger a boulder booby trap and are forced to escape. The heroes along with a healed Zim and reactivated GIR as well as Shadow escape the temple with the emerald. The crocodile attempts to kill the group, but is crushed by the rolling boulder triggered by Sonic earlier. Meanwhile, the swollen eyeball agency contacts Dib abut the translated power signature, and figures out about the incident at the temple. Dib then contacts Membrane, who reveals that he can use a ship to pinpoint a chaos emerald's location. Dib activates a ship and flies off, unaware that he is being observed by Bill, a government agent dispatched with orders to locate the whereabouts of Eggman in order to apprehend the maniacal scientist. After narrowly escaping the temple, Calvin tracks the fourth chaos emerald to a nearby research facility. Upon arrival, the heroes are attacked by security robots, which they destroy. They split up to search for the emerald, but are unable to find it. Calvin tries to locate the emerald using the scanner, but is unable to find the emerald, indicating it has been moved. Knuckles and Calvin get into an explosive argument because of this revelation, but are broken up by a furious Shadow. Shadow, fed up with the bickering, decides to go after the emerald alone and tosses the emeralds to Sonic and departs alone, despite Sonic's protests. However, Zim summons his ship to find the chaos emerald, but realizes Dib has found it. Sonic asks Dib to hand over the chaos emerald, but Dib refuses, saying he will use the emeralds to save the world and exposes Zim's intentions to take over Earth. Upon hearing this, Zim and GIR betray the heroes and Sonic corners Zim, but before he can finish the traitorous alien off, Eggman and his fleet arrive, distracting Sonic. Zim, taking advantage of the situation, knocks Sonic out of the way and escapes in his ship with GIR, leaving the heroes and Dib to do battle with Eggman and his Egg Robos. Despite their best efforts, the heroes are all defeated and knocked unconscious and are captured by Metal Sonic. The heroes are then imprisoned in Eggman's flagship. Sonic wakes up with Calvin, Dib, and Knuckles. Knuckles blames Dib for getting them captured, but Sonic asks to take the blame himself for the fight they had at the beginning of the story. Sonic begins to lose hope without Shadow or Zim to help them, but Calvin encourages Sonic to keep going until they defeat Eggman. Calvin devises a strategy to reclaim the chaos emeralds and escape. He knows Eggman will punish them somehow and will escape when the time comes. Upon arrival at Eggman's base, Eggman takes the four heroes to a torture chamber, where they are guarded by an Egg Robo and sends the rest into a dungeon. Eggman then reveals his excitement as he finally has the upper hand over Sonic. Just as Metal Sonic is about to activate the torture device, with the crocodile from the canyon temple wanting to eat them, Calvin destroys the Egg Robo guarding the four and steals the five chaos emeralds and returns them to the heroes. The four then free the other heroes and they band together and attempt to steal a ship, but are caught by the Egg Robos and Metal Sonic and the crocodile. However, Calvin activates one of the ships and the heroes escape and hijack the ship. Eggman and Metal Sonic pursue the heroes. Calvin uses his piloting skills to destroy Eggman's fighters and eventually, Eggman ejects in the Eggmobile to confront Sonic just as his flagship explodes. Eggman vows that Sonic will never find the last two chaos emeralds and if he does, he won't have them for long. Sonic refuses to accept this and attacks and defeats Eggman, which causes the Eggmobile to spiral out of control and fall towards the Earth. After that, Calvin sets a course to a nearby valley, and they set off to find the last of the emeralds. Upon arrival, they find the traitorous Zim who has found the last two chaos emeralds. He orders GIR to attack, but he is stopped. Dib quickly steals the chaos emeralds and they flee into the sea on a boat, but Zim cannot follow them because his weakness is water, but he vows revenge. The heroes manage to get to an island where they are attacked by heavily armored Egg Robos, but they put up resistance and destroy them, but are soon attacked by Metal Sonic, who was watching from the shadows. Metal Sonic then fights the heroes. Metal Sonic knocks Sonic into the ocean and Amy is shot in the back by an Egg Robo and falls into the ocean, but Calvin saves her before she can drown. Tails and Knuckles fend Metal Sonic off and save Sonic. The heroes make shelter in a underground bunker, but are cornered by Eggman and his Egg Robos. Eggman has his Egg Robos surround the heroes. Sonic vows that the chaos emeralds will never be Eggman's as long as he lives. Eggman, tired of Sonic foiling his plans again and again, orders his robots to open fire and execute the heroes, but before they can kill the heroes, the heroes are teleported away and saved from death. The heroes are teleported to a small alien vessel, and Calvin and Hobbes realize, much to their shock, that their rescuers were none other than their two alien companions, Galaxoid and Nebular. The two aliens refer to Calvin as "Earth Leader", much to Sonic's annoyance. Calvin and Hobbes reveals to Sonic that the duo met Galaxoid and Nebular and paid them 50 earth leaves for visitation of the Earth. Galaxoid and Nebular reveal that their home is being attacked by other aliens. They rescued Calvin and the others so that Calvin could negotiate peace with the aliens. After a short discussion, Calvin and the heroes agree to help negotiate peace. Galaxoid and Nebular set a course for their homeworld and the heroes thank them for saving them from Eggman. When the two aliens question who Eggman is, Sonic brushes off the conversation and promises to explain later. The ship arrives at the homeworld of the Star-Moon Alliance. Upon arrival, the two aliens reveal that the aliens behind the massacre are the Irkens, Zim's race. After the revelation, the heroes are attacked by robotic SIR units. The heroes fight the robot soldiers off as they make their way towards the Irken base. Upon arrival, the heroes are beamed up to the Irken flagship, where they are escorted to the Almighty Tallest by Irken soldiers. When Sonic questions the Tallest about Zim's mission on Earth, the Tallest reveal that Zim had foiled Operation Impending Doom 1 by nearly destroying the Irken homeworld, Irk. To ensure that Zim could not interfere with Operation Impending Doom 2, they gave Zim a "secret mission" to planet Earth, which no Irken (not even the Tallest themselves) had ever heard of or knew even existed. Galaxoid and Nebular present Calvin to the Tallest to negotiate. Calvin makes a compromise with the Tallest to end the violent conflict and promises them donuts, but the Tallest refuse to go to Earth because of Zim's operations on the planet. Sonic decides to reveal the existence of the Eggman Empire and their conflict. At first, the Tallest again refuse as they want nothing to do with Zim, but agree to help the heroes when Calvin tells them Eggman has donuts. As the Irken and Star-Moon Alliance forge an alliance, Dib concludes if Zim shows up, he will most likely fight alongside them as the Irkens are his people. Galaxoid and Nebular relay their leader's thanks for negotiating peace and the heroes join their newfound alien allies and head off to Earth to confront Eggman. Meanwhile, Eggman launches his space station, the Death Egg, into orbit over Earth and prepares to take over Earth. Metal Sonic witnesses the arrival of the alien fleet and becomes aware that Sonic has returned. Zim also witnesses their arrival from his base on Earth. As the heroes and their allies commence their attack, Metal Sonic alerts Eggman of the attack. Calvin orders the Tallest to charge up the missile cannon, which they do and destroy the barricade of carriers surrounding the Death Egg. Galaxoid and Nebular advance their ship towards the Death Egg's entrance while the other aliens keep Eggman's fighters occupied. Meanwhile, Zim witnesses the battle and prepares his ship. Meanwhile, before the heroes can enter the Death Egg, they are attacked by an elite robot named Gemerl. Meanwhile, GIR is watching television, when Zim busts through the door and informs him of the situation. GIR joins his master and they blast off into space to join the battle. Meanwhile in space, the alien alliance pushes forward with no casualties and destroys most of Eggman's fighters. In response, Eggman orders the Egg Robos to charge up the Final Egg Blaster to annihilate the entire fleet. Meanwhile, the Tallest notice Gemerl chasing Galaxoid and Nebular's ship, and send the stealth fighters to deal with the elite robot. Gemerl is about to catch up to the heroes, but is quickly destroyed by the stealth fighters, and they proceed with the attack. However, the heroes notice that Eggman has charged up the Final Egg Blaster and Galaxoid and Nebular activate an energy shield and expand it around the rest of the fleet. Eggman fires the Final Egg Blaster to destroy the fleet, but the blast fails to destroy the fleet, thanks to the energy shield. The Tallest then shoot their missile cannon and destroy the Final Egg Blaster and the heroes enter the Death Egg. After heading inside, a robot named Omega is activated by an unknown force. As the heroes move through the Death Egg, they find Metal Sonic, who possesses two chaos emeralds. Knuckles tries to attack Metal Sonic, but is overpowered. Knuckles quickly recovers and the heroes fight Metal Sonic. Metal Sonic is able to grab five of the chaos emeralds and become more powerful. Metal Sonic quickly gains the upper hand and overpowers the heroes. Metal Sonic prepares to kill Sonic, but is stopped by GIR and a redeemed Zim. Metal Sonic prepares to kill Zim, but Zim reveals the master emerald and enhances GIR with it. GIR quickly depowers Metal Sonic and reverts him to normal. Metal Sonic prepares to strike again, but is defeated and destroyed by Zim and GIR. Sonic, Dib, and the other heroes accept Zim's redemption. The heroes head off to confront Eggman. When the heroes reach Eggman, a furious Eggman reveals he has taken Professor Membrane hostage and he will kill him if Sonic does not surrender the emeralds. Sonic reluctantly gives up the emeralds, but Eggman is attacked by a figure from the shadows, who also destroys his Egg Robos and frees Membrane. The figure steps into the light and reveals himself to be Shadow, much to Sonic's shock. Omega is also revealed to have been working with Shadow after Shadow left the heroes in the research facility and the duo have been working together to bring down Eggman so that Sonic and his friends could succeed. Shadow and Sonic do battle with Eggman. The crocodile from the canyon attacks the heroes, but is defeated when Knuckles knocks the crocodile into an electrical field, killing the crocodile and disabling the power. During the fight, Sonic destroys the Death Egg's core and causes it to fall towards Earth. Sonic asks Shadow to use chaos control for them to escape, but he is reluctant. Sonic reminds Shadow of his promise to Maria to keep mankind safe. Shadow agrees and he and Sonic knock Eggman aside. Shadow then uses chaos control to teleport the heroes, Membrane and himself as well as Eggman to an island as the Death Egg falls to Earth. However, Dib realizes the Death Egg will cause a huge explosion that will take many lives. Shadow, seeing no other choice, uses the chaos emeralds to enhance himself and Sonic and reactivate some of Eggman's elite Egg Robos. Shadow and Sonic push the Death Egg away from the surface. Eggman, upon realizing that his plans have failed again, curses furiously and blames Sonic for the cause of his failures. Shadow tells Sonic to look after the chaos emeralds and uses the power of the emeralds and seemingly sacrifices himself to destroy the Death Egg and ultimately saves the world.  The heroes celebrate their victory and Calvin presents the Tallest with donuts stolen from the Death Egg. With the deed done, the Irkens return home. Calvin thanks Galaxoid and Nebular for helping the heroes stop Eggman and the two aliens bid the heroes good luck and blast off into space to return to their home planet. Shortly afterwards, a group of soldiers arrive led by Bill arrive on the island in a submarine and quickly arrest Eggman. As the heroes celebrate, Sonic watches the sunset alone. Knuckles joins him and tells him that Calvin is constructing a new time machine to return the heroes to their own homes. Knuckles also tells Sonic that Shadow's sacrifice was brave and he should be proud of him, but Sonic corrects Knuckles and confirms that Shadow is still alive and explains Shadow's will to protect humanity to keep protecting them no matter what happens. Sonic also tells Knuckles that Shadow is a survivor and will return to save the world again if humanity is in danger in the future. The screen cuts to the celebration and shows Zim and Dib making high fives, sharing mutual respect for one another. The scene then cuts to Sonic running into the horizon as the screen goes black. An epilogue then explains that after the final defeat of Eggman, Calvin created a new time machine to send the heroes back to their own homes as well as himself and Hobbes, and the heroes resumed their normal lives. Galaxoid and Nebular also helped rebuild society on their planet. As a reward for bringing the evil scientist to justice, Bill became a worldwide hero. The epilogue then cuts to Eggman, now incarcerated, asking the soldier guarding his cell if he could turn on his air conditioning, but the soldier opens fire and shoots Eggman as the screen goes black. 
==Characters==
Sonic - The world's fastest hedgehog and one of the main protagonists of the show. Sonic uncovers a scheme made by Eggman to conquer the world and later makes an alliance with several other heroes to save the world from his nemesis and his army of Badnik robots once again.
Tails - A fox with two tails and is Sonic's sidekick. He helps Sonic on many occasions throughout the show and serves as a supporting protagonist.
Knuckles - A short-tempered echidna and a friend of Sonic. He spends most of his time alone guarding the Master Emerald, but is always willing to help Sonic save the world if he has to.
Amy - Sonic's love interest.
Shadow - A black hedgehog created to protect humanity as the "Ultimate Life Form" and is one of the main deuteragonists of the show. He sides with Sonic and various other heroes to save the world from Eggman.
Calvin - A mischievous young boy who always has a passion for trouble and intellect. He, along with his tiger Hobbes, sides with Sonic and co. to stop Eggman's plans for world domination. Serves as a main protagonist.
Hobbes - Calvin's best friend and tiger. Hobbes helps Calvin out throughout the show on many occasions as a protagonist.
Zim - A member of the alien race called the Irkens and sent to Earth by the Tallest to control it. He is one of the show's main protagonists and makes an uneasy alliance with Dib to save the world from Eggman. He later betrays his allies when Dib reveals his intentions, but returns to help during the final battle against Eggman.
GIR - Zim's crazed robot sidekick who assists him in his missions and serves as a deuteragonist. He and his master forge an alliance with others to save the world from Eggman.
Dib - Zim's rival and intelligent young kid who always attempts to foil Zim's schemes to control Earth and also attempts to prove his alien nature to the public, but never succeeds in doing so. He briefly sides with Eggman in exchange for a chaos emerald, but later makes an uneasy alliance with Zim to save the world when he discovers Eggman's true intentions. Serves as a secondary protagonist.
Omega - Shadow's robot companion with a powerful hatred of Eggman. Omega begins working with Shadow sometime after he leaves the heroes in the research facility, but does not appear physically until the final battle against Eggman. After Shadow's departure from the heroes in the research facility, he finds Omega and begins working wth him to stop Eggman from behind the scenes as the heroes search for the other chaos emeralds.
Bill - A highly skilled government agent and Dib's role model. After Eggman's attack on the city where Dib lives, Bill begins looking for a way to bring Eggman to justice. After the Death Egg is destroyed, Bill successfully tracks down and captures Eggman, ending his threat to Earth and his plans for world domination. As a reward for apprehending the evil scientist and helping the heroes stop his army of Egg Robos, Bill is named a worldwide hero.
Professor Membrane - A brilliant scientist and Dib's father.
Almighty Tallest - Zim's superiors and leaders of the Irken Empire who are obsessed with snacks and conquest. They later forge an alliance with the star-moon alliance and the heroes to save the world from Eggman.
Galaxoid and Nebular - Two small aliens who sided with Calvin to help support their worlds and are members of the Star Moon Alliance. They are minor protagonists and refer to Calvin as "Earth Leader". Thay later make an alliance with the heroes and the Irken Empire to save the world from Eggman.
Egg Robos - Dr. Eggman's robot henchmen who help him carry out his nefarious schemes for world domination. Thay are programmed to serve Eggman and do whatever is necessary to ensure Eggman's plan is not tampered with, even if it means killing one of Eggman's enemies(primarily Sonic).
Metal Sonic - A robot doppelganger of Sonic created by Eggman who is Eggman's right-hand man and the secondary antagonist of the show. Metal Sonic can match any ability of Sonic's, most notably his speed. Throughout most of the show, Metal Sonic carries out missions to prevent Sonic and other heroes from interfering with Eggman's plans for world domination. He turns into a more powerful version of himself when powered with all seven chaos emeralds during the final battle, but is destroyed by GIR.
Dr. Eggman - An evil scientist and Sonic's archenemy and the primary antagonist of the show. Eggman is an obese scientist who seeks to find the seven chaos emeralds and use their powers to take over the world. He has an army of robot henchmen called Egg Robos who carry out his evil plans. He briefly allies with Dib, but Dib later betrays him when he discovers his plans. He frequently sends his Egg Robos and Metal Sonic to kill Sonic and the heroes, but is eventually defeated in his headquarters, the Death Egg, by Sonic and his allies with help from the Star-Moon Alliance and the Irken Empire, sending it plummeting into the ocean and exploding shortly afterwards. Eggman's plans are foiled and he is arrested by Bill and is later executed. 
== Episodes ==
#Swampy Attacks
#Trouble in Mushroom Kingdom
#Terror Continues
#Strange Beings
#Battles Between Heroes
#Doom to Leaf Forest
#The Hunt Begins
#Times of Peril
#S.O.D.I.U.W.
#Old Rivalries
#Betrayal
#Enemy Alliance
#Unfriendly Welcome
#B.A.I.D.L.
#Rise and Rescue
#Unexpected Encounter
#B.F.T.L.O.P.
#The End
== Sequel ==
The creator, thechocobro, announced a sequel a week after finishing Dimension Mix-up. The sequel was called Dimension Takeover. The major protagonists will return half a decade after the events of Mix-Up to combat a new threat.
Category:Fan Fiction