Sonic Underground
S01E16 Friend or Foe?
The Hedgehogs gather on the Floating Island, hoping to locate their Mother. Meanwhile, Sleet and Dingo also have their eyes on the island, drawn by its connection to the Chaos Emerald, the source of its vitality. However, before anyone can realize their ambitions, they must first contend with Knuckles, the island's tough protector.
Season 1 Episodes
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9
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Beginnings (Origins, Part 1)
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 of the Crown
Three Hedgehogs and a Baby
Dunes Day
Mummy Dearest
Hedgehog in the Iron Mask
Six Is a Crowd
Flying Fortress (Chaos Emerald Crisis, Part 1)
Wedding Bell Blues
No Hedgehog Is an Island (Chaos Emerald Crisis, Part 2)
Getting to Know You (Origins, Part 2)
New Echidna in Town (Chaos Emerald Crisis, Part 3)
Harmony or Something (Origins, Part 3)
Country Crisis
Haircraft in Space
Healer
Sonia's Choice
The Big Melt
Sleepers
Bartleby the Prisoner
The Art of Destruction
The Pendant
Virtual Danger