- S1.E1 ∙ Beginnings (Origins: Part 1)
- S1.E2 ∙ Getting to Know You (Origins: Part 2)
- S1.E3 ∙ Harmony or Something (Origins: Part 3)
- S1.E4 ∙ To Catch a Queen
- S1.E5 ∙ Mobodoon
- S1.E6 ∙ The Price of Freedom
- S1.E7 ∙ Underground Masquerade
- S1.E8 ∙ Tangled Webs
- S1.E9 ∙ The Deepest Fear
- S1.E10 ∙ Who Do You Think You Are?
- S1.E11 ∙ The Last Resort
- S1.E12 ∙ Come Out Wherever You Are
- S1.E13 ∙ Winner Fakes All
- S1.E14 ∙ A Hedgehog's Home is Her Castle
- S1.E15 ∙ Artifact
- S1.E16 ∙ Bug!
- S1.E17 ∙ Sonic Tonic
- S1.E18 ∙ Friend or Foe
- S1.E19 ∙ Head Games
- S1.E20 ∙ When in Rome
- S1.E21 ∙ The Jewel in the Crown
- S1.E22 ∙ Three Hedgehogs and a Baby
- S1.E23 ∙ Dunes Day
- S1.E24 ∙ Mummy Dearest
- S1.E25 ∙ The Hedgehog in the Iron Mask
- S1.E26 ∙ Six Is a Crowd
- S1.E27 ∙ Flying Fortress: Chaos Emerald Crisis Part 1
- S1.E28 ∙ No Hedgehog Is an Island: Chaos Emerald Crisis Part 2
- S1.E29 ∙ New Echidna in Town: Chaos Emerald Crisis Part 3
- S1.E30 ∙ Wedding Bell Blues
- S1.E31 ∙ Country Crisis
- S1.E32 ∙ Haircraft in Space
- S1.E33 ∙ Healer
- S1.E34 ∙ Sonia's Choice
- S1.E35 ∙ The Big Melt
- S1.E36 ∙ Sleepers
- S1.E37 ∙ Bartleby the Prisoner
- S1.E38 ∙ Art of Destruction
- S1.E39 ∙ The Pendant
- S1.E40 ∙ Virtual Danger
Sonic Underground (1999)
Genre: Animation , Action , Adventure
Actor:Maurice LaMarche , Garry Chalk , Gail Webster , Peter Wilds , Sam Vincent , Stevie Vallance , Tyley Ross , Terry Klassen , Matt Hill , Blu Mankuma , Cusse Mankuma , Tabitha St. Germain , Jaleel White , Brian Drummond , Merrilyn Gann , Lee Tockar , Ian James Corlett , Philip Maurice Hayes
