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Sonic Underground

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Sonic and his siblings search for their mother while being chased.

Latest episodes

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The Oracle advises the Hedgehogs to take on an assignment that could disclose answers about their future.
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The Hedgehogs find out that Sonia has inherited a castle. She basks in the idea of having a castle for headquarters.
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A speed-enhancing liquid deemed Sonic Tonic is invented by Robotnik to make him as fast as Sonic so that he may finally catch him.
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Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.
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Robotnik has his eyes set upon Queen Aleena's crown jewel, but Sonic, Manic and Sonia plan to retrieve the gem before Robotnik.
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While adrift in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon a haven called Lake Valley Resort.
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Sonia is invited to a debutante ball, but before she can make her debut into society, she and her brothers have to go on an important mission.
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Sonic and his siblings journey to the outskirts of Mobius to recruit a tribe of drifters for the Resistance.
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Knuckles grudgingly makes a deal with Robotnik to hand over Sonic and his kin in exchange for finding the Chaos Emerald that will save Mobius.
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Sleet and Dingo flee the Flying Fortress with the Chaos Emerald, which they drop and break in half.
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Manic, Sonic and Sonia have to end their training early when Robotnik threatens the Oracle and takes a member of the resistance prisoner.
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The Hedgehogs start to learn the significant lessons of what it takes to be a freedom fighter. The Oracle supplies teachers to guide them.
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Robotnik captures Bartleby and uses him as bait to imprison Sonia. While the Hedgehogs are occupied, Sonia sneaks away to assist her friend in need.
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Sleet and Dingo make a plan to collect the taxes due to Robotnik but they intend to keep it for themselves.
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Sonia discovers that the watch she received from her friend is actually a monitoring device for the Robotnik Intelligence Agency.
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A homecoming is interrupted for Sonic, Sonia and Manic when Sleet and Dingo arrive to collect back taxes after returning to their birthplace.
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Argus, is captured by Sleet and Dingo before he can reach the secret rendezvous where he was to meet Queen Aleena.
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Robotnik makes an announcement that he and Queen Aleena will be wed so he can become king of Mobius.
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What is believed to be a vacation for Sonic, Manic and Sonia turns into a battle to rescue Mobius when Robotnik strikes with his newest weapon.
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The Hedgehogs latest mission to find their mother takes them to the prison tower, where they come across a masked stranger who insists he is family.
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The Hedgehogs congregate on the Floating Island in their latest effort to find their mother. But Sleet and Dingo also have an interest in this island.

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