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From Sonic Retro

The Hedgehog in the Iron Mask is the 23rd episode of Sonic Underground. In America, this episode was originally aired on Sept. 29, 1999, on the Sci-Fi Channel.

Transcripts

• The Hedgehog in the Iron Mask (transcript)

Sonic Underground TV Episodes

Beginnings | Getting to Know You | Harmony or Something | To Catch a Queen | Mobodoon | The Price of Freedom | Underground Masquerade | Tangled Webs | The Deepest Fear | Who Do You Think You Are | The Last Resort | Come Out Wherever You Are | Winner Fakes All | A Hedgehog's Home Is Her Castle | Artifact | Bug! | Sonic Tonic | Friend or Foe? | Head Games | When in Rome | The Jewel in the Crown | Three Hedgehogs and a Baby | Dunesday | Mummy Dearest | The Hedgehog in the Iron Mask | Six Is a Crowd | Wedding Bell Blues | Flying Fortress | No Hedgehog Is an Island | New Echidna in Town | Country Crisis | Haircraft in Space | Healer | Sonia's Choice | The Big Melt | Sleepers | Bartleby the Prisoner | The Art of Destruction | The Pendant | Virtual Destruction