Sonic Underground
In the third animated series based on the popular SEGA videogame character, Sonic The Hedgehog along with his siblings Sonia and Manic, battles the evil Dr. Robotnik, while making time for his real passion, their rock band, Sonic Underground.
Episode guide
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Beginnings
In this pilot episode, the origin story takes place on Mobius, but in an alternate dimension. The show is similar to the Saturday version, but with some differences. Sonic is a prince with…
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To Catch A Queen
When the triplets were babies, the Oracle gave them each a magic medallion which would turn into a musical instrument with even more powers. Sonic's turns into a guitar which can shoot lase…
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Mobodoon
While traveling through a creepy forest, Sonic Underground stumble upon the city of Mobodoon, which appears and disappears every 100 years. There, they meet Mayor Winningham who tells them…
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The Price Of Freedom
Sonia travels east to visit her friend Mindy at the LaTour estate. After being given a watch by her friend, she discovers that these timepieces are monitoring for Robotnik.
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Underground Masquerade
Manic and Sonia continue their fight against Dr. Robotnik to bring peace to Mobius and find their mother. Sleet and Dingo plan to collect the taxes owed to the Duke of Velcronia and keep th…
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Tangled Webs
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…
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The Deepest Fear
On a trip to Port Mobius Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast Moby Deep. The hedgehogs also meet Captain Squeege who informs them of a scam in…
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Who Do You Think You Are
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.
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The Last Resort
While lost in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon an oasis called Lake Valley Resort.
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Come Out Wherever You Are
Sonia is invited to a debutante ball, but before she can be officially announced to society, she and her brothers have an important mission.
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Winner Fakes All
Robotnik has created a super-fast robot and he's organized a race for the top athletes of Mobius and the robot. But it's all a trap to drive Sonic out into the open ? can he resist the comp…
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A Hedgehog's Home Is Her Castle
Sonia inherits a spooky and dilapidated castle and she enjoys the idea of making it the Underground headquarters. But all is not as it seems when they stay there overnight.
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Artifact
In order to raise money for his own cause Robotnik auctions off artifacts from the lost city of Mobupinchu. But these artifacts are actually from more recent history; they are bombs, and th…
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Bug!
The Sonic Underground finds a village that has been destroyed by its Freedom Fighter occupants. This strange cause seems to have something to do with Robotnik's flybots which are all over t…
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Sonic Tonic
Dr. Robotnik finds a way to make Sleet and Dingo run as fast as Sonic.
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Friend Or Foe
The band visit the Floating Island in search of their mother. There they meet Knuckles the Echidna, the island's guardian, who has been falsely told by Sleet and Dingo that the Sonic Underg…
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Head Games
Queen Aleena sends her children over to Speedster Island which Bartleby is trying to turn into a holiday resort. Sleet and Dingo are pretending to help but they just want to roboticize the…
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When in Rome?
As a test of the hedgehogs' intellect and wit the Oracle strips them of their powers and sends them into an alternate, Roman-themed reality where a Sleet-look-alike presides as Emperor. The…
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The Jewel In The Crown
Robotnik has his sights set upon Queen Aleena's crown jewel- which glows as it is moved closer to her. Sonic, Manic and Sonia plan to recover the jewel from the merchant owner before Robotn…
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Three Hedgehogs And A Baby
While in Mobotropolis Sonic, Sonia and Manic find an abandoned baby hedgehog. While Sonic and Sonia search for its parents Manic is left to look after it and get in touch with his mothering…
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Dunesday
Sonic, Manic and Sonia continue their fight against Dr. Robotnik to bring peace to Mobius and find their mother.
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Dunes Day
Sonic and his siblings travel to the outskirts of Mobius to recruit a tribe of nomads for the Resistance. But their van breaks down, and they are saved by the tribesmen.
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Mummy Dearest
The Sonic Underground journey through the treacherous Mobian desert as they try to locate a hidden temple filled with prophecies of Robotnik's defeat. With Sleet and Dingo in hot pursuit ca…
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The Hedgehog In The Iron Mask
Sonic Underground find Robotnik's tower and rescue a prisoner who claims to be their uncle and their mother's twin brother. But in reality, the prisoner is an actor named Luke Periwinkle wh…
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Six Is A Crowd
The hedgehogs visit the Oracle again. He sends them to an alternate dimension where they are tyrannical rulers of Mobius and Robotnik is the leader of the Freedom Fighters. They must defeat…
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Flying Fortress
Robotnik creates a new flying fortress to lay waste to the planet. When the Sonic Underground suspect that a Chaos Emerald is keeping the fortress aloft they head to the Floating Island to…
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Wedding Bell Blues
Robotnik announces that he will marry Queen Aleena in a plot to become King of Mobius. Sonic, Manic and Sonia immediately smell a trap.
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No Hedgehog Is An Island
After taking off with the Chaos Emerald, Dingo accidentally breaks it unleashing the chaos energy inside. The Sonic Underground and Knuckles set off to talk to Knuckles' great grandfather A…
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Getting To Know You
The newly reunited Sonic Siblings must learn to work as a team if they are to do battle with Robotnik. But do they really know each other well enough?
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New Echinda In Town
Knuckles bargains with Robotnik in order to recover and repair the Chaos Emerald before Mobius is destroyed but, to acquire the villain's help, the echidna must betray the Hedgehogs. After…
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Harmony Or Something
Part 3 of the pilot episode. Sonic, Sonia and Manic put their training to the test as they embark on a mission to rescue the Oracle from Robotnik. Can they work together in harmony, or will…
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Country Crisis
The Sonic Underground are on a mission to stop a group of hillbillies from feuding so they can stop Robotnik's building project from flooding the countrieside.
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Haircraft In Space
A salon robot is hypnotizing people that go to her salon into revealing deep secrets. When Sonia goes she reveals the location of their new base. Can she and her brothers keep Robotnik from…
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Healer
The Hedgehogs discovers a man who has found the way to de-roboticize people. The man is captured by Dr. Robotnik and Robotnik changes his de-roboticizer's program. Then the man is tricked i…
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Sonia's Choice
Robotnik has arranged a museum exhibit of the Royal Family goblets, knowing that Sonia, Sonic and Manic will want to reclaim their family's treasure.
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The Big Melt
What started as a fun vacation for Sonic, Sonia and Manic gets ruined by Dr. Robotnik when he comes up with his most original plan yet ? melt the polar ice caps. Things will be hard for the…
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Sleepers
Robotnik invents a new dart that induces sleep and sends them after the resistance. It's up to the hedgehogs to stop them from the source. But they run into trouble when Manic is hit by the…
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Bartleby The Prisoner
Robotnik captures Bartleby and uses him as bait to capture Sonia. While the Hedgehogs are busy sealing Robotnik's mining operation, Sonia slips away to aid her friend in need.
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The Art Of Destruction
Robotnik creates a super powerful robot called Art and sends him to destroy Sonic Underground. But after Art spends time with the band, he eventually becomes good and even sacrifices his li…
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The Pendant
While combating Sleet and Dingo in the newly discovered Emerald Peninsula Sonia finds a magic pendant that threatens to turn her invisible. Sonic and Manic are in a race against time to fin…
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Virtual Danger
Sonic and Manic play a game of virtual reality to enhance their pilot skills.
