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 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’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…

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…

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

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

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.

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.

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

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

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

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

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

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.

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.

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…

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…

On Sonic’s birthday, Tails builds a flying bicycle. Realizing Tails’ potential with mechanics, Professor Von Schlemmer invites Tails to be his research assistant.

On Sonic’s birthday, Tails builds a flying bicycle. Realizing Tails’ potential with mechanics, Professor Von Schlemmer invites Tails to be his research assistant.

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

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

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

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

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.

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

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

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.

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.

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 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…

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

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

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.

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.

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.

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.

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.

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