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Sonic Underground

Sonic Underground

1 Season
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Sonic and his siblings search for their mother while being chased.
Kids, Animation, Adventure

  • C8


  • Wedding Bell Blues

    1. Wedding Bell Blues

    Robotnik makes an announcement that he and Queen Aleena will be wed so he can become king of Mobius.

    21m 48s

  • To Catch a Queen

    2. To Catch a Queen

    Argus, is captured by Sleet and Dingo before he can reach the secret rendezvous where he was to meet Queen Aleena.

    21m 48s

  • Mobodoon

    3. Mobodoon

    A homecoming is interrupted for Sonic and the gang when Sleet and Dingo arrive to collect back taxes after returning to their birthplace.

    21m 49s

  • The Price of Freedom

    4. The Price of Freedom

    Sonia discovers that the watch she received from her friend is actually a monitoring device for the Robotnik Intelligence Agency.

    21m 48s

  • Underground Masquerade

    5. Underground Masquerade

    Sleet and Dingo make a plan to collect the taxes due to Robotnik but they intend to keep it for themselves.

    21m 48s

  • Tangled Webs

    6. Tangled Webs

    Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.

    21m 48s

  • The Deepest Fear

    7. The Deepest Fear

    On a trip to Port Mobius, Sonic, Manic and Sonia are told that a Mobian sea beast has been sinking ships.

    21m 48s

  • Who Do You Think You Are?

    8. Who Do You Think You Are?

    Rumor has it that Queen Aleena's journals are buried in the city of Tashistan. Sonic and his siblings search the city for the scrolls.

    21m 48s

  • The Last Resort

    9. The Last Resort

    While adrift in the wastelands of Mobius, Sonic, Manic and Sonia stumble upon a haven called Lake Valley Resort.

    21m 48s

  • Come Out Wherever You Are

    10. Come Out Wherever You Are

    Sonia is invited to a debutante ball, but before she can make her debut into society, she & her brothers have to go on an important mission.

    21m 48s

  • Winner Fakes All

    11. Winner Fakes All

    Robotnik organizes a track meet to lure Sonic into a trap.

    21m 46s

  • A Hedgehog's Home Is Her Castle

    12. A Hedgehog's Home Is Her Castle

    The Hedgehogs find out that Sonia has inherited a castle. She basks in the idea of having a castle for headquarters.

    21m 46s

  • Artifact

    13. Artifact

    The Hedgehogs steal historical objects of Mobuis from Robotnik before he can hock them off at an auction.

    21m 48s

  • Bug!

    14. Bug!

    A group of Freedom Fighters is obliterated by a swarm of metallic fly-bots. When Manic goes looking for the insects, he is stung with serum.

    21m 48s

  • Sonic Tonic

    15. Sonic Tonic

    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.

    21m 48s

  • Friend or Foe?

    16. Friend or Foe?

    The Hedgehogs congregate on the Floating Island in their latest effort to find their mother.

    21m 48s

  • Head Games

    17. Head Games

    Sonic finds a note from his mother advising him to go to Speedster Island.

    21m 48s

  • When in Rome ...

    18. When in Rome ...

    Sonic becomes aggravated that maybe their efforts of fighting for freedom seem pointless.

    21m 48s

  • The Jewel of the Crown

    19. The Jewel of the Crown

    Robotnik has his eyes set upon Queen Aleena's crown jewel, but Sonic, Manic and Sonia plan to retrieve the gem before Robotnik.

    21m 47s

  • Three Hedgehogs and a Baby

    20. Three Hedgehogs and a Baby

    Sonic, Manic and Sonia find an abandoned baby in an alley and begin to look for the baby's parents. Manic becomes very fond of the child.

    21m 48s

  • Dunes Day

    21. Dunes Day

    Sonic and his siblings journey to the outskirts of Mobius to recruit a tribe of drifters for the Resistance.

    21m 48s

  • Mummy, Dearest

    22. Mummy, Dearest

    Sonic, Manic and Sonia find a book that contains directions to a scroll that might be an important tool to defeat Robotnik.

    21m 47s

  • The Hedgehog in an Iron Mask

    23. The Hedgehog in an Iron Mask

    The Hedgehogs latest mission to find their mother takes them to the prison tower, where they come across a masked stranger.

    21m 48s

  • Six Is a Crowd

    24. Six Is a Crowd

    The Oracle advises the Hedgehogs to take on an assignment that could disclose answers about their future.

    21m 46s

  • Flying Fortress

    25. Flying Fortress

    A vacation for Sonic, Manic and Sonia turns into a battle to rescue Mobius when Robotnik strikes with his newest weapon.

    21m 48s

  • Beginnings

    26. Beginnings

    The story of the Underground is told, from the fall of Mobotropolis to the ascent of Robotnik.

    21m 48s

  • No Hedgehog Is an Island

    27. No Hedgehog Is an Island

    Sleet and Dingo flee the Flying Fortress with the Chaos Emerald, which they drop and break in half.

    21m 47s

  • Getting to Know You

    28. Getting to Know You

    The Hedgehogs start to learn the significant lessons of what it takes to be a freedom fighter. The Oracle supplies teachers to guide them.

    21m 47s

  • New Echinda in Town

    29. New Echinda in Town

    Knuckles grudgingly makes a deal with Robotnik to hand over Sonic and his kin in exchange for finding the Chaos Emerald.

    21m 47s

  • Harmony of Something

    30. Harmony of Something

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

    21m 47s

  • Country of Crisis

    31. Country of Crisis

    Queen Aleena advises the Hedgehogs to journey to a valley so that they can bring about harmony between two parties of the resistance.

    21m 47s

  • Haircraft in Flight

    32. Haircraft in Flight

    Robotnik is using the resident hairdresser, Doo-bot, to get information on the civilians who are opposed to him.

    21m 47s

  • Healer

    33. Healer

    A self-proclaimed scientist has come to Robotropolis with a tool that will undo the effects of Robotnik's robotisizer.

    21m 47s

  • Sonia's Choice

    34. Sonia's Choice

    Robotnik has assembled a museum exhibit of the royal family goblets, which he presumes will serve as perfect bait.

    21m 47s

  • The Big Melt

    35. The Big Melt

    The Hedgehogs' vacation is cut short by the news of Robotnik's newest weapon. They must journey to the arctic where the weapon is located.

    21m 47s

  • Sleepers

    36. Sleepers

    The Hedgehogs are informed that freedom fighters have vanished and are going to be robotisized.

    21m 46s

  • Bartleby the Prisoner

    37. Bartleby the Prisoner

    Robotnik captures Bartleby and uses him as bait to imprison Sonia.

    21m 47s

  • The Art of Destruction

    38. The Art of Destruction

    Robotnik's new weapon, Art, is the enforcer of Robotropolis new eradication policy. Art's purpose is to obliterate everything in sight.

    21m 47s

  • The Pendant

    39. The Pendant

    The newly discovered Emerald Peninsula is a perfect location for Robotnik to add slaves to his domain.

    21m 47s

  • Virtual Danger

    40. Virtual Danger

    Sonic and Manic participate in a game of virtual reality to improve their pilot skills.

    21m 47s