Sonic Satam
Sonic the Hedgehog (commonly referred to fans as: Sonic SatAM, because it usually aired in a Saturday morning time slot) is an American animated series created by DIC Entertainment with the partnership of Sega of America and ABC Productions, and was based on the video game series. The series aired two seasons on ABC from September 18, 1993 until December 3, 1994, and reran until May 1995.

The series sharply contrasts with Adventures of Sonic the Hedgehog, a syndicated series that premiered in the same month. While Adventures of Sonic the Hedgehog was lighthearted, comical and aimed for a significantly young age group, Sonic the Hedgehog featured a darker, more complex plot which constituted a departure from the tone of the Sonic games of the time.

Plot synopsis

The show takes place on a planet called Mobius sometime in the 33rd century. An infamous mad scientist named Dr. Julian Ivo Robotnik who owned a pet robot chicken named Cluck, invaded and conquered a huge city named Mobotropolis with the help of his assistant and nephew Snively and his army of robot soldiers called SWATbots.
He then used a giant airship called the Destroyer to turn Mobotropolis into a new city, renaming it Robotropolis, a polluted city of factories, warehouses and mining facilities.

Those who managed to escape retreated into the Great Forest and built a village named Knothole to hide from Robotnik, including a group called the Freedom Fighters, among them the protagonist, Sonic the Hedgehog, as well as his best friend Tails, a young two-tailed fox who can twirl his tails to fly.

Other Freedom Fighters include Rotor, a walrus with a knack for machines which rivals that of Sir Charles, Antoine D'Coolette, a French coyote and former palace guard with many personality flaws, and Bunnie Rabbot, a pretty Southern cyborg rabbit. Last is the group's leader, Princess Sally Acorn, the king's only daughter, a squirrel/ chipmunk hybrid and Sonic's future girlfriend. Sally carries a sentient mini-computer named NICOLE.
For 10 years, the Freedom Fighters constantly foiled Robotnik's schemes, although failed to make much difference in the big picture, Robotnik still ruling the planet with a fist of steel, quite literally. In the show's second season, a winged female dragon named Dulcy was a new star. Dulcy's mother Sabina was captured and roboticized along with most of her species. Another character was also introduced: an evil sorcerer named Ixis Naugus, who was Robotnik's mentor. During the takeover, Naugus discovered a portal into the Void. Requesting Robotnik to bring him back to Mobius, Naugus went through the portal to explore it, but Robotnik betrayed him and sealed it, intent on trapping Naugus forever.

Two other key characters appeared in the second season: One was Ari the Ram, the other was Lupe the Wolf. In the episode Game Guy, Ari led Sonic into a trap set up by Robotnik. Ari was the leader of a group of Freedom Fighters which Robotnik captured. In exchange for their release, Ari reluctantly agreed to help Robotnik capture Sonic. Shortly thereafter, Robotnik broke his half of the deal when he roboticizes Ari's friends and planned to roboticize him. Later, as Robotnik was about to send Sonic into the void, Ari sacrificed himself by saving Sonic and ended up going through the portal himself. He didn't escape the void until the episode The Void.
Lupe is the leader of a group of Freedom Fighters called the Wolf Pack who appeared in Cry of the Wolf. They lived peacefully in a village until Robotnik's forces terrorized them. The Wolf Pack were sent hiding in a cavern until Sonic, Sally and Antoine discovered them. They joined up to attack Robotnik's forces. When Sonic destroyed the last of Robotnik's saucer pods, Lupe and Ari, along with Palo the Rhino and Dirk the Bear, joined all the Freedom Fighters in their ultimate goal to destroy the Doomsday Project and defeat Robotnik once and for all.

In the series finale (The Doomsday Project), the Freedom Fighters collectively organize a raid on Robotnik's Doomsday machine, but they are all captured. When their plans teeter on the verge of failure, Sonic and Sally resort to using the Deep Power Stones to destroy the machine. Robotnik tries to flee but his hovercraft is caught in the destruction and he is presumably killed. The Freedom Fighters celebrate their long-awaited victory together in Knothole. Later, Snively arises from the rubble, overjoyed that his oppressive uncle is now gone. Eager to have his turn at world conquest, Snively reveals he is in league with an unknown villain who has menacing red eyes.

Unaired Season 3:

In an interview with screen-writer Ben Hurst, he reveals the third season had already been plotted out before the show's cancellation. Upon the request of an eager fanbase, Hurst revealed the unknown villain would be the wizard Ixis Naugus. Robotnik was not killed on Doomsday, rather he has become trapped within the void as Naugus' prisoner.
Snively would briefly rise to power and assume his uncle's title as oppressive overlord, but quickly fails thanks to Sonic and the Freedom Fighters. Out of desperation, Snively frees Naugus from the void, and in the process also frees Robotnik and King Acorn, though the two have become the wizard's slaves. Naugus immediately usurps the title of main villain and uses King Acorn as bait to try and capture Sally. Snively, reduced to nothing, defects to the side of the Freedom Fighters (which briefly occurred in the Sonic Archie comic storyline).

More developments would happen between the relationship of Sonic and his friend Tails, who discovers an "incredible power" and saves the Freedom Fighters from a great disaster. It has also been mentioned that Sally would romance with someone other than Sonic. The origins of Robotnik and Snively would also be revealed. Ben Hurst has said no scripts were written for Season 3. Hurst has been reluctant to reveal too much of season three's plot, as he is keen on one day resuming the production of the series, despite the fact that the show has been cancelled for almost 16 years.