In this 3rd cartoon of Sonic the Hedgehog, Sonic and his two siblings, Manic and Sonia are the hit rock band, Sonic Undeground. But in reality they are the children of Queen Aleana, the queen of Mobius. Queen Aleana was abandoned from Mobius by Sonic's enemy, Dr. Robotnik who turned Mobius into a waste land. So now Sonic, Manic and Sonia must fight Dr. Robotnik and his two sidekicks, Sleet and Dingo and the SWAT Bots, with the aid of their metal medallions and bring peace to Mobius and find mother! Will the hedgehogs find their mother? Will they defeat Robotnik? The resistance begins on Sonic Undergroud! Written by Stuart Brewer
| Resim | Sezon Sırası | Toplam Sırası | İngilizce İsim | Türkçe İsim | Yönetmen | Yazar |
|---|---|---|---|---|---|---|
 | 1 | 1 | Beginnings (Origins: Part 1) | Beginnings (Origins: Part 1) | Tom Smith | Pat Allee,Ben Hurst |
 | 2 | 2 | Getting to Know You (Origins: Part 2) | Getting to Know You (Origins: Part 2) | Marc Boréal,Francois Hemmen,Daniel Sarriet | Pat Allee,Ben Hurst |
 | 3 | 3 | Harmony or Something (Origins: Part 3) | Harmony or Something (Origins: Part 3) | Marc Boréal,Francois Hemmen,Daniel Sarriet | Pat Allee,Ben Hurst |
 | 4 | 4 | To Catch a Queen | To Catch a Queen | Tom Smith | Douglas Booth |
 | 5 | 5 | Mobodoon | Mobodoon | Tom Smith | Peter Hunzinger |
 | 6 | 6 | The Price of Freedom | The Price of Freedom | Tom Smith | Martha Moran |
 | 7 | 7 | Underground Masquerade | Underground Masquerade | Tom Smith | Richard Merwin |
 | 8 | 8 | Tangled Webs | Tangled Webs | Tom Smith | Pat Allee,Ben Hurst |
 | 9 | 9 | The Deepest Fear | The Deepest Fear | Tom Smith | Mark Edward Edens,Michael Edens |
 | 10 | 10 | Who Do You Think You Are? | Who Do You Think You Are? | Tom Smith | Pat Allee,Ben Hurst |
 | 11 | 11 | The Last Resort | The Last Resort | Tom Smith | Michael Edens |
 | 12 | 12 | Come Out Wherever You Are | Come Out Wherever You Are | Tom Smith | Pat Allee,Ben Hurst |
 | 13 | 13 | Winner Fakes All | Winner Fakes All | Tom Smith | Mark Edward Edens |
 | 14 | 14 | A Hedgehog's Home is Her Castle | A Hedgehog's Home is Her Castle | Tom Smith | Len Janson |
 | 15 | 15 | Artifact | Artifact | Tom Smith | Mark Edward Edens,Michael Edens |
 | 16 | 16 | Bug! | Bug! | Tom Smith | Len Janson |
 | 17 | 17 | Sonic Tonic | Sonic Tonic | Tom Smith | Mark Edward Edens |
 | 18 | 18 | Friend or Foe | Friend or Foe | Marc Boréal,Francois Hemmen,Daniel Sarriet | n/A |
 | 19 | 19 | Head Games | Head Games | Tom Smith | Michael Edens |
 | 20 | 20 | When in Rome | When in Rome | Tom Smith | Len Janson |
 | 21 | 21 | The Jewel in the Crown | The Jewel in the Crown | Tom Smith | Mark Edward Edens |
 | 22 | 22 | Three Hedgehogs and a Baby | Three Hedgehogs and a Baby | Tom Smith | Len Janson |
 | 23 | 23 | Dunes Day | Dunes Day | Tom Smith | Mark Edward Edens |
 | 24 | 24 | Mummy Dearest | Mummy Dearest | Tom Smith | Pat Allee,Ben Hurst |
 | 25 | 25 | The Hedgehog in the Iron Mask | The Hedgehog in the Iron Mask | Tom Smith | Bob Forward |
 | 26 | 26 | Six Is a Crowd | Six Is a Crowd | Tom Smith | Len Janson |
 | 27 | 27 | Flying Fortress: Chaos Emerald Crisis Part 1 | Flying Fortress: Chaos Emerald Crisis Part 1 | Tom Smith | Mark Edward Edens |
 | 28 | 28 | No Hedgehog Is an Island: Chaos Emerald Crisis Part 2 | No Hedgehog Is an Island: Chaos Emerald Crisis Part 2 | Marc Boréal,Francois Hemmen,Daniel Sarriet | Matt Edens |
 | 29 | 29 | New Echidna in Town: Chaos Emerald Crisis Part 3 | New Echidna in Town: Chaos Emerald Crisis Part 3 | Marc Boréal,Francois Hemmen,Daniel Sarriet | Mark Edward Edens |
 | 30 | 30 | Wedding Bell Blues | Wedding Bell Blues | n/A | n/A |
 | 31 | 31 | Country Crisis | Country Crisis | Marc Boréal,Francois Hemmen,Daniel Sarriet | Laren Bright |
 | 32 | 32 | Haircraft in Space | Haircraft in Space | Marc Boréal,Francois Hemmen,Daniel Sarriet | Tracy Berna |
 | 33 | 33 | Healer | Healer | Marc Boréal,Francois Hemmen,Daniel Sarriet | Pat Allee,Ben Hurst |
 | 34 | 34 | Sonia's Choice | Sonia's Choice | Marc Boréal,Francois Hemmen,Daniel Sarriet | n/A |
 | 35 | 35 | The Big Melt | The Big Melt | Marc Boréal,Francois Hemmen,Daniel Sarriet | Len Janson |
 | 36 | 36 | Sleepers | Sleepers | Marc Boréal,Francois Hemmen,Daniel Sarriet | n/A |
 | 37 | 37 | Bartleby the Prisoner | Bartleby the Prisoner | Marc Boréal,Francois Hemmen,Daniel Sarriet | Eleanor Burian-Mohr,Terence Taylor |
 | 38 | 38 | Art of Destruction | Art of Destruction | Marc Boréal,Francois Hemmen,Daniel Sarriet | Laren Bright |
 | 39 | 39 | The Pendant | The Pendant | n/A | Steve Cuden |
 | 40 | 40 | Virtual Danger | Virtual Danger | Marc Boréal,Francois Hemmen,Daniel Sarriet | Pat Allee,Ben Hurst |