A contest for the best hedgehog in the land is going on and Sonic is due to win it, right? Maybe not this time. He's got some tough competition.
A lonely Tails wants to join a family. It seems he might just get it when he finds a billboard about a family looking for their missing son: a two tailed fox! Problem is, it's truly all a plan by Dr. Robotnik to capture Tails. Will Sonic find out in time and rescue Tails?
Salesman Wes Weasely is selling weapons to Dr. Robotnik to catch Sonic. But, of course, none of them work due to Scratch and Grounder's stupidity.
Robotnik is after the Power Gems from the city of Submerbia in the Labyrinth Zone. After kidnapping the Princess Bubbles, her Merman boyfriend goes to Sonic for help.
To ruin Sonic's reputation, Robotnik constructs a robot replica. He forces a young mouse to pilot it by threatening the mouse's parents.
Sonic rescues the superhero, Captain Invincible. But Sonic soon finds his heroic efforts hampered by Invincible's incompetence. After Sonic rejects his attempts to help, Invincible is tricked by Robotnik into capturing Sonic.
An asteroid is heading for Turtle Town and Robotnik offers to save it. But only if Sonic agrees to play in the Robolympics against Robotnik, Scratch and Grounder. Can Sonic win when all the games are rigged?
Sonic saves a hedgehog girl, Breezie, from Scratch and Grounder, and falls for her. However, she is truly a robot created by Robotnik to exterminate Sonic. Can Tails save the lovesick Sonic before it's too late?
Sonic and Tails head into a network of abandoned mine shafts to escape Scratch and Grounder. There, they find an old mole and his hoard of diamonds. The old mole thinks they're trying to steal his diamonds and imprisons them.
Robotnik's design for a ""Super-Genius"" chip is stolen by Hacker the Mole. The chip winds up in, of all places, Grounder. With his intelligence greatly amplified, Grounder ousts Robotnik and succeeds in capturing Sonic.
Robotnik is in need of workers to build a huge monument of himself. To get workers, he opens up the new Casino Night Zone to get gamblers to lose everything and have to work for him.
When Grounder makes a bet with Scratch that he can catch Sonic first, the robotic chicken orders a build-it-yourself Eagle Copter kit from his favorite TV Show called Edgar Eagle. Scratch fails to catch Sonic as usual while piloting the Eagle Copter, and crashes into a barn in the process. The crash scatters the chicken's brains as he now believes he's Edgar Eagle, earning a turkey fangirl in the process! As for Sonic, the hedgehog has troubles of his own as Robotnik is trying to make a robot factory out of his friend Farmer Brown's farm. Luckily for the hero, Scratch is willing to help as long as he thinks he's Edgar Eagle. Too bad his strange act of good won't last long...
Robotnik creates a machine capable of turning dreams into reality. When he uses it on himself, he unleashes a Nightmare Monster upon Mobius.
A giant baby ape comes to Sonic for help. It's father has been by Robotnik, who plans to destroy Mobius with both it and his new laser weapon.
Scratch and Grounder have to deliver some bombs to Robotnik. Before they can, they meet up with ""Da Bears,"" who think they're Sonic and Tails.
It's Momma Robotnik's birthday and she's broken out of the asylum to get her present. Momma Robotnik decides to have Robotnik destroy the Mobius National Park, but he fails to do so. So she tries to catch Sonic.
Dr. Robotnik's finally done it as he's invented a ray gun that's supposed to slow Sonic down for good! Sending the Dumbbots out to do his dirty work, a family of sloths comes under attack from Scratch and Grounder, who use them to lure Sonic into the path of the Doc's new Slow Motion Ray. Sonic is then captured, but saved by Tails when he reverses the effects of the ray and turns it on the sloths, turning them into a high speed fighting force, before turning it back on Sonic!
When the robots rip open a door to an alternate dimension, a mysterious small purple alien blob creature from another dimension falls through into Tails hands and Sonic lets him keep it. Simple? Wrong! The one problem is, the alien will only eat. . . Guess . . . Yep, chilidogs! And if it doesn't get them it grows into a huge alien, goes ballistic, and sucks everything up in sight. The alien - now named Goopster, is in constant danger as the robots would find it more useful as a weapon, and are constantly try to capture it. However, Dr. Robotnik steps in, kidnaps it and Sonic and Tails must go to rescue it! But things get really haywire when Robotnik angers the alien and it sucks up Sonic and Tails instead! The heroes eventually trick the robots into sending it home to its parents as things return back to abnormal.
A half man, half duck named Quark suddenly appears with his robot servant in tow, and attempts to oust Robotnik from the villainy stakes. The two attempt to co-operate and defeat Sonic, but rivalry and stupidity mean that they fail and the newcomer is sent back to from whence he came.
Five years ago, Robotnik banished his insane cousin Warpnik to the "Zone of Confusion." Unfortunately, seeking revenge, Warpnik has escaped and in a three Ring bind of sorts he captures Tails, knowing that Sonic will follow Tails, and knowing that Robotnik will follow Sonic! His plan works to a tee, as they all end up trapped in the Zone of Confusion. Sonic could rescue Tails and get out – but Warpnik has a gun that turns everything into a monster! Trees, fish, rocks, even Robotnik's robots… And considering the Zone setting is like the inside of an insane person's head, this is going to be difficult.
Mama Robotnik once again escapes from the asylum (see "Mama Robotnik's Birthday"), and returns to wreak revenge on Sonic, notifying the law that a homeless minor is roaming the streets, and offering to adopt him. The minor you ask - Sonic! The courts forcibly place him under her care even without Sonic's pleas, and she imprisons him in her fortress, using Tails, locked in her torture chamber, to keep him there!
Robotnik tries to get Professor Dinglehopper's growth gun to work, but it explodes and creates a cloud of growth gas! It happens to drift over Tails, who grows incredibly large! In his huge state, he can't help but destroy (relatively) small things – such as towns and people! Sonic has to go get the antidote before Robotnik does "something good for the community" by viciously shooting Tails with a freeze ray.
Dr. Robotnik has created three new Badniks under the moniker of the "Super Special Sonic Search and Smash Squad" – codenamed Scratch, Grounder, and Coconuts. Their full job is to eradicate the devilish Doc's number one enemy – Sonic the Hedgehog!
In the town of Tranquil Glutch, the local sheriff is driven out of ton by Six Gun Pete, a robot from Robotnik. Sonic and Tails enter the town under the impression they are going to kick back and relax. They enter Miss Possum's Saloon. Six Gun Pete appears in the saloon and tries to gun down Sonic, only to end up losing his head. Sonic declines an offer to become sheriff even after Tails pleads. He gives into it when Miss Possum asks him. Six Gun Pete returns to Robotnik and destroys the model for Gambler's Gultch. Robotnik sends Scratch and Grounder to get Sonic. Sonic tries his luck at shooting cans and completely misses; including the broadside of a barn. Scratch and Grounder enter the town and call Sonic out. Sonic gets them into a game of strip poker. Sonic beats them with 5 aces and continually beats them until they lose their heads. Scratch and Ground capture Miss Possum in a runaway stage coach. They trap Sonic in the car and jump, but forget their parachutes. Sonic uses them to
An intergalactic bounty-hunter comes to Mobius looking for unusual people and decides to catch Sonic. She runs into Robotnik when trying to catch him, and falls in love with him. She arranges for them to be married and hunt for Sonic together, though Robotnik is not too enthusiastic about it. Oddly enough, at the ceremony Sonic is the preacher and Tails plays the organ. Just as it's about to be over, Mama Robotnik shows up and says "I won't let my son ruin his life!" She then fights with the bounty hunter who leaves, deciding that she could never be related to Mama Robotnik.
Dr. Robotnik invents a Freeze-O-Ray that he tries to use to petrify Sonic. It works, and Tails has to keep Sonic away from Robotnik until he can cure his condition. At the end, the gun shoots itself, and is frozen forever, much to the chagrin of Robotnik.
Robotnik somehow invents a ray that makes people turn into babies, and shoots Sonic and Tails. However, he also shot himself! An overly hyper baby Sonic, a baby Tails that can speak few words, and the bully-like Baby Robotnik are taken to daycare, where they must go the whole day without a time-out until the effects wear off. Scratch and Grounder use multiple disguises to try and trick the owner of the daycare into thinking they're the kid's parents, but none work.
Robotnik builds a mechanical wife and tries to catch Sonic with her help, but Sonic messes with it so it treats Robotnik badly.
In the adaptation of Sonic Spinball for the Sega Genesis, Sonic, Wes Weasley and Sergeant Doberman attempt to breach the defences of Robotnik's new fortress, and none of them can stand the sight of each other.
When Robotnik announces his intention to give up villainy, Sonic is therefore forced into retirement, and the offer of an all expenses paid adventure holiday from a town's grateful mayor seems like just a thing to relieve his and Tails' boredom. But - Shock! Horror! - The mayor was really a robot, and the entire island is populated by the duplicitous Robotnik's troops, and they are determined to upon bringing about the heroes' demise. Perhaps mercifully, this is completely bland.
Robotnik constructs a pushy P.T. robot in an attempt to increase Scratch and Grounder's fitness, and the three of them try to rub out Sonic with various lethal sporting devices.
When Robotnik opens up a resort to make the resident Mobians his slaves, Sonic enlists the help of some robots from an area of Mobius called Scrap Valley.
Scratch and Grounder have a super-suction plate that they intend to have Sonic run over and get caught, but the suction beam goes up into outer space and hits a passing spaceship! Containing an alien inside with a squid for a head, and a large, free-floating red amoeba, Sonic and Tails find out that the alien is on his way to be crowned king of Rhombus, and if he isn't there in time, his baby brother (who wants to blow up Mobius) will be king instead! The ship lost some parts when it crashed, but particularly a red nosecone with a built-in navigation chip they need to get to Rhombus in time. There's just one problem - Grounder's nose falls off when the ship crashes, and he grabs the nosecone, thinking it's his nose. Sonic has to get it back in time to have the alien go back and be king and to keep the planet from becoming a pile of kibble in the starstream.
One of Tails' inventions catches the eye of the goofy Professor Dinglehopper, who asks the fox to leave Sonic and become his research assistant! While they travel to the professor's laboratory, the professor is captured and replaced by Robotnik, who gets the unwitting fox to help him to build his new anti-Sonic weapon! All is saved when Sonic accidentally shows up.
When Dr. Robotnik builds a robot ""son"" that looks like him. He finally has a sense of pride, but the pride is soon dashed to pieces when the robot realizes he'd rather be on Sonic's side because ""Sonic's nicer.""
Dr. Robotnik acquires a magic wand and a book of spells from Wes Weasley, and attempts to master them while trying to destroy the Mobius mint before it can release a Sonic banknote, with the ultimate aim of forcing it to produce currency in his own image.
The Chaos Emerald mini-series starts off with Robotnik waiting for a good scientist, Professor Caninestein, to finish working on a time machine. Robotnik says he's going to use it to go back in time and steal four all-powerful "Chaos Emeralds of Invisibility, Invincibility, Immortality, and (the Power of) Life." Once he has all of them, he will become The Surpreme High Robotnik! While Robotnik and his Dumbbots get the time machine in use, Caninestein heads for the beach and warns Sonic (who seems intent on impressing all the babes) and Tails about Robotnik's plot. Using some "atomic-relativity boots" that Caninestein made, Sonic and Tails chase Robotnik to the time of Blackbeard the Pirate. Robotnik uses a "Robot-Transmogrifier Ray" to roboticize Blackbeard (because he knows where to find the Emerald of Invisibility) and make him work for him. Sonic and Tails show up before Robotnik (who's now had plenty of time to buy some pirate gear for himself and the crew) and Blackbot can reach l
So Robotnik and his robots head for the time of King Arthur and the Knights of the Hound Table. Robotnik meets Merlence the Wizard (and Scratch and Grounder get to fool around with a magic wand), who just hands him the Emerald of Invincibility. But holding the Emerald is just half the thing – you need to be king for it to work. So Robotnik takes over the throne and makes Merlence change Sonic's boots to stone. Sonic and Tails rescue Merlence and humiliate Robotnik so hard he loses the Emerald, then they send the Badniks to a Roman coliseum, and Sonic gets a knighthood.
Robotnik and his idiots escape from the lions and head for ancient Mobegypt, when they can find the Emerald of Immortality. Robotnik, of course, knows that Sonic will try to stop him. But Robotnik has apparently got a surprise plan here - he tries to make sure Sonic is never born by preventing the Blue Blur's Egyptian ancestors, Masonic and Penelope, from meeting. Sonic and Tails show up, this time having used Caninestein's ""Time-Warp Boogie Board"" (the boots were hurting Sonic's feet), and manage to save Masonic from being kept under wraps. The kicker, though, is that Sonic winds up preventing his ancestors' meeting and is erased from existence. Instead of deciding to change the show's name to The Adventures of Tails the Kitsune, Tails fixes the paradox and gets Masonic and Penelope to meet, and Sonic reappears as if on cue. Unfortunately, Robotnik has now made himself pharaoh and forces Sonic, Tails, Masonic, and Penelope to build pyramids for him. When Robotnik figures that the Emer
The Badniks go back to the Mesozoic Era and steal the Emerald of Life, but not before Robotnik kills his Dumbniks to do so by throwing them into the volcano. Sonic is too late to stop him. Robotnik and his morons (who have somehow been resurrected despite getting thrown into the lava) go back to the last three episodes to get the other Emeralds, and Sonic and Tails are too late to stop them again. Robotnik places all four Emeralds on his neck and grows larger and becomes Surpreme High Robotnik, and sends Sonic and Tails to the Big Bang. They escape and rely on theirselves (other Sonics and Tails using the time-travel devices) to defeat Robotnik.
Sonic comes to the rescue of a town as it is held to ransom by a crime syndicate under the control of Dr. Robotnik!
A popular cartoonist Sketch Lampoon is imprisoned in Robotnik's prison. Sonic has a plan, to get captured in the prison cell and then break out and save Sketch Lampoon. But will it work?
Robotnik invents a ray gun that literally transports Sonic, Tails, and Robotnik's gang into a storybook! Robotnik steals a magic wand straight off and uses it on Sonic and Tails. He assumes the role of the evil character in parodies of each story. And the bad thing is Tails doesn't know what's going to happen because Sonic never read him fairy tales.
There's going to be some sort of fair in Sonic's honor today on Planet Mobius, but Sonic wakes up and finds his shoes gone! He suspects Robotnik, but he can't run without the shoes due to the fact that the friction would tear his feet up, so he has to use detective work. He realizes it was a pushy carnival salesman. He admits to having stolen them as he was going to cut them up and sell them as souvenirs.
Coconuts knocks a bunch of chemical mixes off a shelf into a vat. Robotnik falls into them and gains super powers as he challenges Sonic to a series of physical tests - and the one who loses the most has to leave Mobius forever! Robotnik's only weak point is his butt, since it was the only part that didn't touch the chemical. Sonic puts a pin on his chair, and Robotnik loses his powers. And though he loses, Robotnik doesn't leave. Scratch, Grounder, and Robontik quote: ""And you two! I'm demoting you two to floor cleaners!"" ""But why? We didn't even do anything!"" ""Exactly!""
Robotnik plants bombs at three of Mobius' centers of transport: an airport, a port and a railway station, threatening to cause chaos unless Sonic can effectively be in three places at once!
Sonic and Tails are blasted into space whilst trying to prevent Robotnik from launching a deadly rocket towards a space station! When they arrive, they find the space station inhabited by a very hungry - and cold afflicted - alien, who views them as the first fresh meat for some time, but they bargain with the alien that it can chase Robotnik for as long as it wants, if it will help them return to Mobius! The sneezing alien is the only joke, and it doesn't work.
When Scratch and Grounder capture a Freedom Fighting Kangaroo named MacHopper (a cheap Crocodile Dundee wannabe) Robotnik comes to realize that Mac may be the only person capable of matching Sonic at his own game, as he brainwashes Mac into doing his dirty deeds! But in the attempt to reprogram his brain an explosion occurs in the lightning storm, causing his reprogramming to go bonkers. And so, his mind begins to switch programming from lost memory, to regular memory, to Robotnik created memory and the only true mind reviver being none other than chili.
Sonic and Tails babysit a pair of baby beavers who are at least as much trouble as Robotnik, and get themselves kidnapped at least as often as Tails! Robotnik attacks the heroes while they're pre-occupied, but the twins are ultimately better at seeing off villains than Sonic himself.
Tails unwittingly steps on a piece of ""high-speed gum"" that Dr. Robotnik invented and now he can run really super fast! There's just one drawback to his new super speed ability - because unfortunately, once he starts speeding, he can't control himself.
A parody of the old Lifestyles of the Rich and Famous, except about Robotnik and his daily routine of evil - with a twist: especially when Robotnik kidnaps Robin Leech's niece! And to top that - Robin isn't so much of a good egg himself...
Sonic gets a speeding ticket that he can't afford to pay, and has to do labor in a field to make up for it. Meanwhile, he learns of a plan that Robotnik is going to use special pollen that hypnotizes people and makes them do his bidding! Problem is - how can he hope to stop Robotnik if he's trapped doing hard time?
When Robotnik threatens to close down an orphanage and evict all the poor little orphans, Sonic and Tails enter Caninestein's car design in a race, in an attempt to win the prize money! But the robots, Scratch and Grounder are also competing, and dog Sonic and Tails all the way, until they realize that they may be replaced if Sonic is defeated.
Robotnik hatches a plan to shrink the sources of all of Mobius' natural resources, and keep them all in his fortress! Hit by his shrink ray, Sonic and Tails must make their way across the doctor's lab and join forces with the residents of the shrunken cities to stop Robotnik!
Quite a popular singer, Catty Carlisle sings a song about Sonic (showing off his heroic side). It soars to the top of the charts and Robotnik finds out. And when he does he captures singer Catty Carlisle, and Sonic comes to the rescue and saves her with the help of his friend Tails.
Robotnik has invented The Ultra-Freezomatic with his goal to freeze every being on Mobius and place on them little cigarette-patch looking ""Servitude Chips"" thus giving them complete obedience to Robotnik! But when he installs them in Scratch and Grounder with the program of ""Get Sonic!"" they end up prematurely setting off the Freezomatic. Thus in the ensuing chaos and messed up circuitry Scratch and Grounder fluctuate between Sonic and Robotnik being their master. And even worse still Tails is captured and a servitude patch placed on him!
Robotnik is running for president, and Sonic runs against him to ensure that Robotnik won't win. But, Robotnik uses mind control that affects everyone except Sonic, because he's so fast. But, in the end Robotnik only gets one vote - Himself! Yes, Scratch, Grounder, and Mama voted for Sonic!
Mad Mike (last seen in ""The Robotnik Express""), receives a blow to the head and suffers amnesia, which causes him to think that he is loyal to Robotnik! Sonic, Tails and Big Griz however must change his mind.
Robotnik traps Sonic in his death-trap amusement park called Robotnik Land. There Robotnik tortures Sonic and it's his birthday! Can you believe it? Will Sonic escape?
While fishing, when Tails pulls out a mermaid hedgehog named Merna, its up to Sonic and Tails to save the day when they find out Dr. Robotnik is destroying her underwater city.
Robotnik captures a master of martial arts (Miyagi by any other name), and steals his knowledge in order to turn Scratch and Grounder into better fighters. The master's pupil comes to Sonic and Tails for help, and the trio then battle the robots for the sensei's freedom.
Robotnik is after Easy Eddie, a pick pocket that took his Chaos Emerald ring that he was going to use to conquer Mobius and he wants it back.
When Sonic disappears from the face of the planet mysteriously, it's up to Tails to locate him with the help of Professor Dinglehopper! But a mysterious lost city and unknown doings by Dr. Robotnik may complicate problems. And just what did happen to Sonic anyway?
Dr. Robotnik invents a machine that literally implodes everything, he's going to use it to conquer the planet once and for all once he installs the BLAMMO component… Meanwhile, Scratch and Grounder create a robot out of spare parts that they use to do their bidding. The robot runs away, taking the BLAMMO, an important, delicate piece of Robotnik's imploding machine. And its thus here that Sonic has to recover the BLAMMO from the robot before it implodes the whole planet!
Dr. Robotnik's up to his old tricks as he's convinced a superhero that Sonic is the enemy! (Sound familiar? Check "Over The Hill Hero"!) Capturing Sonic under the impression that he could get his own show leaves Tails' and a bunch of other Mobians' plans to give Sonic a surprise banquet and a Hero of the Year award a little askew… Sonic gets captured along with his friends, is slammed inside a giant disco ball and heaved into a lake to drown to death! The trick: If any of his friends come even close to the ball, it'd start filling with water, if Sonic tried to escape he'd drown, and if he did nothing he'd run out of air! And to make matters worse, he places the other Mobians in a cage and starts to sink the ship they're on!
While searching for a present for Princess Sally, Sonic and Tails learn that Dr. Robotnik, posing as Robotnik Claus, has stolen every gift on the planet. Sonic and Tails search for the real Santa and find him locked away seven miles south of the North Pole. Santa says the Special Ring Sonic is wearing, a gift Sally gave him, will give him super speed if he passes some tests.
The pilot episode of Adventures of Sonic the Hedgehog is an unaired 7-minute animation created in 1992 as a proposal for the TV series. It was produced in-house in America rather than being outsourced to Asia as the series was. It was unaired and was not included on any of the DVD releases of the series, but on March 4, 2009 it was finally released by Milton Knight and posted on Youtube by Dan Variano. While Sonic is voiced by Jaleel White, the voices of Dr. Robotnik and Scratch are provided by Jim Cummings, the voice of Tails is provided by Russi Taylor, and Gary Owens plays the narrator.