Playback serverIf a title won’t play, switch servers.
Sonic Underground
Season 1 · Episode 36
Sleepers
0.021mOctober 18, 1999
On a mission in a distant sector of Robotropolis, the Hedgehogs are informed that freedom fighters have disappeared and are going to be roboticized. Sonic races to save his friends, but he is too late. The group of freedom fighters have been robotisized, including Cyrus' father.
Episodes
- Episode 1Beginnings (Origins, Part 1)
- Episode 2To Catch a Queen
- Episode 3Mobodoon
- Episode 4The Price of Freedom
- Episode 5Underground Masquerade
- Episode 6Tangled Webs
- Episode 7The Deepest Fear
- Episode 8Who Do You Think You Are
- Episode 9The Last Resort
- Episode 10Come Out Wherever You Are
- Episode 11Winner Fakes All
- Episode 12A Hedgehog's Home Is Her Castle
- Episode 13Artifact
- Episode 14Bug!
- Episode 15Sonic Tonic
- Episode 16Friend or Foe?
- Episode 17Head Games
- Episode 18When in Rome...
- Episode 19The Jewel of the Crown
- Episode 20Three Hedgehogs and a Baby
- Episode 21Dunes Day
- Episode 22Mummy Dearest
- Episode 23Hedgehog in the Iron Mask
- Episode 24Six Is a Crowd
- Episode 25Flying Fortress (Chaos Emerald Crisis, Part 1)
- Episode 26Wedding Bell Blues
- Episode 27No Hedgehog Is an Island (Chaos Emerald Crisis, Part 2)
- Episode 28Getting to Know You (Origins, Part 2)
- Episode 29New Echidna in Town (Chaos Emerald Crisis, Part 3)
- Episode 30Harmony or Something (Origins, Part 3)
- Episode 31Country Crisis
- Episode 32Haircraft in Space
- Episode 33Healer
- Episode 34Sonia's Choice
- Episode 35The Big Melt
- Episode 36Sleepers
- Episode 37Bartleby the Prisoner
- Episode 38The Art of Destruction
- Episode 39The Pendant
- Episode 40Virtual Danger