The history of the Underground is told in detail, from the fall of Mobotropolis to the rise of Robotnik. Included, is a prophecy, as told by the Oracle of Delphius, that caused Queen Aleena to give up…

The Hedgehogs begin to learn the important lessons of what it takes to be a freedom fighter.

Manic, Sonic and Sonia must end their training early when Robotnik threatens the Oracle and takes a member of the resistance hostage.

Sonia travels to east Mobius to visit her friend Mindy at the LaTour Estate. After being given a watch by her friend Mindy, Sonia discovers that these popular timepieces are really monitoring devices …

Sleet and Dingo plan to collect the taxes owed to Robotnik from the Duke of Velcronia but keep it for themselves. To avoid the wrath of Robotnik, Sleet and Dingo infiltrate the Underground to corral M…

The sinister Robotnik blackmails Cyrus, an old friend of Sonic's, by holding his father hostage. Robotnik makes Cyrus gain the Hedgehogs trust and then has Cyrus convince them to save his father. Cyru…

On a trip to Port Mobius, Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast. The legendary story becomes fishy when the Hedgehogs meet Captain Squeegee who informs the…

Queen Aleena's royal journals are rumored to be buried under a palace in the city of Tashistan. As Sonic and his siblings scour the city in search of the scrolls, Sonia gets into trouble when she is a…

While lost in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon an oasis called Lake Valley Resort. Although Sonic is impressed with the beauty of this safe haven, he has a sinking feeling…

Sonia is invited to a debutante ball, but before she can be officially announced to society, she and her brothers, Manic and Sonic have an important mission. Robotnik has constructed an evil weapon th…

Robotnik organizes a track meet to lure Sonic into a trap. Robotnik is sure that Sonic will not sit out on a challenge of quickness. Sonia and Manic are also aware of Sonic's competitive nature and ad…

The Hedgehogs receive a message they believe is from their cousin. In the message, a castle is left to Sonia, who revels in the idea of having a castle for the Underground headquarters. Sonic, Manic a…

The Hedgehogs steal historical artifacts of Mobuis from Robotnik before he can pawn them off at an auction. Sonic and Sonia take one of the pieces to a university professor who informs them that the a…

A faction of the Freedom Fighters is wiped out by a swarm of metallic fly-bots. When Manic goes in search of the insects, he is stung with serum, making him loyal to Robotnik. Sonia finds Manic commun…

A speed enhancing fluid deemed Sonic Tonic is created by Robotnik to make him as fast as Sonic so that he may finally catch him. Robinik's plan is successful and Sonic is captured, yet when Dingo begi…

The Hedgehogs converge on the Floating Island, in their latest attempt to find their Mother. Sleet and Dingo also have an interest in this island that involves the Chaos Emerald, which is the island's…

As Sonic begins to chow chili dogs for a snack, he finds a message in the sack from his mother urging him to head to Speedster Island. When he, his brother and his sister arrive, what they encounter i…

Sonic becomes frustrated that maybe all of their efforts of fighting for freedom seem futile. Sonia suggests that they go to Oracle, the spiritual guide, to put everything into perspective. The Oracle…

Robotnik has his sights set upon Queen Aleena's crown jewel, which glows as it is moved closer her. Sonic, Manic and Sonia plan to recover the jewel from the merchant owner before Robotnik, not only t…

Sonic, Manic and Sonia find an abandoned baby in an alley and begin a search for the baby's parents. Manic grows particularly fond of the child and decides that instead of taking the baby to a shelter…

Sonic and his siblings travel to the outskirts of Mobius to recruit a tribe of nomads for the Resistance. The Hedgehogs van breaks down and they are saved by the tribesman. Once they return to the cam…

Sonic, Manic and Sonia invade Robotnik's lair to retrieve the Hedgehog crest. After the book is reclaimed, they discover that this book contains directions to a scroll that could be an important tool …

The Hedgehogs latest quest to find their mother takes them to the prison tower where they encounter a masked stranger who insists he is family. This stranger is actually being used as bait for another…

The Oracle advises the Hedgehogs to undertake a mission which could reveal answers about their future. Sonic, Manic and Sonia are thrown into a universe that almost seems to parallel their own, howeve…

What is supposed to be a vacation for Sonic, Manic and Sonia turns into a battle to save Mobius when Robotnik attacks with his newest weapon - the Flying Fortress. Sonic investigates the ship thinking…

Robotnik announces that he will marry Queen Aleena in a plot to become the king of Mobius. Upon hearing the alarming news and shocked that their enemy will become their stepfather, Sonic, Manic and So…

Sleet and Dingo escape the Flying Fortress with the Chaos Emerald. In a fight over who will control the Emerald's power, Sleet and Dingo drop and break the Emerald in two. Instantly, a rash of earthqu…

The Hedgehogs begin to learn the important lessons of what it takes to be a freedom fighter. The Oracle provides teachers to guide Sonic, Manic and Sonia to develop the necessary skills to recognize t…

Knuckles reluctantly makes a deal with Robotnik to turn over Sonic and his family in exchange for finding the Chaos Emerald that will save Mobius. Knuckles soon regrets that he ever trusted the evil d…

Manic, Sonic, Sonia must end their training early when Robotnik threatens the Oracle and takes a member of the resistance hostage. During the rescue mission, the Hedgehogs fall into trouble and begin …

Queen Aleena advises the Hedgehogs to travel to a valley of Mobius so that they can bring about peace between two contingents of the resistance that have split. In the meantime, Robotnik is able to bu…

Robotnik is using the local hairdresser, Doo-bot, to get information on the citizens that are against him. Sonia becomes a victim of the Doo-bots trance during a shampoo and while under the spell, div…

A self proclaimed scientist has come to Robotropolis with a device that will reverse the effects of Robotnik's roboticizer. Sonia, Manic and Sonia attend a demonstration of this new technology where S…

Robotnik has arranged a museum exhibit of the Royal family goblets. Knowing that Sonic, Sonia and Manic will want to reclaim their family's treasures, Robotnik expects the heirlooms will serve as perf…

The Hedgehogs vacation is interrupted by the news of Robotnik's latest weapon. They are shocked as the submarine melts the icy landscape from under their feet. The Hedgehogs then scurry to locate the …

On a mission in a distant sector of Robotropolis, the Hedgehogs are informed that freedom fighters have disappeared and are going to be roboticized. Sonic races to save his friends, but he is too late…

Robotnik's new weapon, Art, is the enforcer of Robotropolis new eradication policy. Art's objective is to destroy everything in sight, including Sonic, Manic and Sonia. The giant mechanical beast is s…

Robotnik's new weapon, Art, is the enforcer of Robotropolis new eradication policy. Art's objective is to destroy everything in sight, including Sonic, Manic and Sonia. The giant mechanical beast is s…

The newly discovered Emerald Peninsula is a perfect place for Robotnik to add slaves to his empire. Sonic, Sonia and Manic are alerted of Robotnik's plan to transplant the peninsula's inhabitants and …

Sonic and Manic play a game of virtual reality to enhance their pilot skills. When the two brothers decide to put their practice to use, they fly in a successful mission that intercepts a supply ship …