A chemical accident caused by Coconuts ends up giving superpowers to Robotnik, who quickly uses them to threaten Mobius’s world leaders and publicly humiliate Sonic.

Robotnik constructs a pushy robot coach in an attempt to increase Scratch and Grounder’s fitness.

When Robotnik opens up a resort to make resident Mobians his slaves, Sonic enlists the help of some robots from an area of Mobius called Scrap Valley.

Robotnik seemingly announces his surrender to Sonic, and he invites him to a resort in his gratitude.

Robotnik’s next stop in his time-travel is the Middle Ages, where the second emerald is. Sonic follows him, but Robotnik, with the unwilling help of a local wizard, obtains the…

Coconuts acquires a magic wand and magical gadgets from Wes Weasley, and attempts to master them.

Robotnik sends Scratch and Grounder into space to pillage the asteroid belt, with Sonic and Tails in pursuit.

Robotnik imprisons a satirical cartoonist for making fun of him in his comic book, much to the chagrin of his biggest fan, Sonic.

Despite the intervention of Sonic and Tails, Robotnik obtains the fourth and final emerald in prehistory. With the emeralds gathered together, Robotnik uses them to become an all-powerful being.

Sonic and Tails help an alien prince fix his space shuttle so he can return to his home planet for his coronation before his younger brother is crowned in his…

Robotnik threatens to demolish an airport, a lighthouse, and a train station. Sonic is forced to travel to all three places in order to remove the bombs.

Robotnik has unleashed his Stupidity Ray on Mobius, knowing that the newly-stupefied Mobians will be too brain dead to stop him.

Robotnik pursues Breezie and Robotnik Jr. in order to find out why they betrayed him with the intent of building a perpetually loyal robot wife.

In his next time-travel stop, Robotnik plans on erasing Sonic’s family tree in order to get the third emerald.

Robotnik goes time-traveling to find the four Chaos Emeralds that bestow the user unlimited power. His first stop is the time of Blackbeard the Pirate, where he enlists the pirate’s…

Robotnik attempts to brainwash MacHopper, a friend of Sonic’s into doing his dirty deeds, but an explosion causes his memory to become unstable.

When Sonic and Tails are captured by Scratch and Grounder, Sonic creates a diversion by telling the duo the story of their creation.

Tails adopts a squishy creature from another dimension named Goobster, who turns out to be a black hole.

Sonic must save a family of sloths from Dr. Robotnik’s slow-motion ray. But when he himself is slowed down by Scratch and Grounder, Tails and the sloth family must take…

Sonic becomes the sheriff of Tranquil Gulch, in hopes of keeping Robotnik’s robots from harassing the locals.

Robotnik and a rival named Brandon Quark try to cooperate in capturing Sonic. However, Sonic tricks them into becoming enemies, and they try to outdo each other.

Tails gets a megadose of Robotnik’s growth gas and grows quickly to monstrous proportions, eating everything in sight and terrorizing the countryside.

Sonic tries to save a gorilla that is under Robotnik’s control, while Coconuts finds the gorilla’s lost baby and plots to use it against Sonic.

An intergalactic huntress visits Mobius, capturing various citizens and falling in love with Robotnik.

An asteroid is heading for Turtle Town and Robotnik offers to save it, but only if Sonic agrees to play in the Robolympics against him and his robots.

Momma Robotnik visits her son, and after he fails once again, she disowns him and decides to adopt Sonic as her own son in order to capture him.

Robotnik is after the Power Gems from the city of Submerbia and Sonic and Tails are hired to stop him.

Robotnik buys new gadgets from an enterprising salesman to help Scratch and Grounder catch Sonic, but winds up regretting his purchases when they keep backfiring.

On the way to stop a train of explosives from arriving at Robotnik’s munition factory, Sonic and Tails must deal with a duo of bears named Big Griz and Mad…

Robotnik reprograms a machine created by Von Schlemmer capable of bringing dreams into reality and unleashes a dream monster upon Mobius.

Robotnik fools Captain Rescue into capturing Sonic after the aging superhero lets his guard down, so Tails must convince Rescue to be his old self again in order to save…

Sonic and Tails infiltrate Robotnik’s new Casino Night Zone to stop him and his henchmen from scamming a group of sheep into becoming Robotnik’s slaves.

When Sonic saves a female hedgehog named Breezie, he falls in love. Sonic does not know that Breezie is a robot that Dr. Robotnik created to keep Sonic occupied while…

When Scratch and Grounder use Robotnik’s latest invention to turn Sonic to stone, Tails attempts to foil the duo to ensure Sonic’s safety.

Robotnik’s obnoxious mother visits her son on her birthday and expects a present. After he fails to destroy a nearby forest as a present, however, she decides to capture Sonic…

Robotnik’s attempt to cause Sonic to age rapidly with his newest device backfires, turning him and Tails, and later himself, into babies.

Robotnik creates a robot Sonic suit in order to ruin his reputation.

Robotnik’s insane cousin, Dr. Warpnik, captures Tails and lures Sonic into his Zone of Confusion in order to enact revenge on Robotnik for banishing him.

Scratch suffers a blow to the head and believes that he is his favorite television character, Edgar Eagle. Sonic uses this to his advantage in preventing another one of Robotnik’s…

Robotnik creates a robot fox family when he finds out that Sonic is trying to find Tails a new home to keep him safe.