Where you respect the speed of sound

New Echidna in Town – Sonic Underground, Episode 29

Title card of New Echidna in Town (Sonic Underground, 1999)
SeriesSonic Underground (DiC, 1999)
SeasonSeason 1 (the only season)
EpisodeEpisode 29 of 40 (production order) · production no. 429 · WildBrain no. 129
French titleDur, Dur-Dur
First aired (France)14 April 1999 · TF1
First aired (US)7 October 1999 · BKN Kids II (syndication) · 29th in US broadcast order
Written byMark Edens
Directed byMarc Boreal, François Hemmen and Daniel Sarriet; Tom Smith (US)
Song“The Mobius Stomp”
Story arcChaos Emerald trilogy, part 3 of 3 (after Flying Fortress and No Hedgehog Is an Island)
Previous episodeGetting to Know You (S01E28)
Next episodeHarmony or Something (S01E30)

Chaos Emerald trilogy 3/3Knuckles’ dealChaos Dingo

New Echidna in Town is episode 29 of Sonic Underground, DiC’s 1999 cartoon about Sonic, Sonia and Manic, the hedgehog triplets of Queen Aleena. It is number 29 in production order – the order TF1 first showed the series in France, where it premiered on 14 April 1999 – and it was the 29th episode to air in the United States, on 7 October 1999. It was written by Mark Edens, and its song is “The Mobius Stomp”.

Synopsis · The song · Key moments · Trivia · Watch the episode · All 40 episodes

Synopsis

Knuckles (New Echidna in Town)
Knuckles.Screenshot: Sonic Underground (1999), “New Echidna in Town” · via Sonic Wiki Zone

Knuckles strikes a bargain with Robotnik: help find and contain the Chaos Emerald before its energy destroys Mobius, and Robotnik’s empire with it. The price is the Sonic Underground. Knuckles agrees only after Robotnik promises to keep the hedgehogs as prisoners rather than roboticize them.

Robotnik lies, of course, and a guilt-ridden Knuckles frees his friends before the Roboticizer can do its work. But a bigger problem has arrived: Dingo has swallowed the Emerald and turned into Chaos Dingo, a monster rampaging across the planet.

Hedgehogs, echidna and dictator are forced into an uneasy team-up to stop him before Mobius is lost. Knuckles clearly has a soft spot for Sonia, and selling her out weighs on him more than anything.

The Song: “The Mobius Stomp”

“The Mobius Stomp” is a dance number in an episode where the whole planet is shaking.

Key Moments

  • Knuckles trades the hedgehogs for Robotnik’s help.
  • Knuckles frees his friends from the Roboticizer.
  • Dingo swallows the Emerald and becomes Chaos Dingo.
Scene from New Echidna in Town (New Echidna in Town)
Scene from New Echidna in Town.Screenshot: Sonic Underground (1999), “New Echidna in Town” · via Sonic Wiki Zone

Trivia

  • The title plays on “New Kid in Town”, the Eagles’ 1976 hit.
  • The siblings, Knuckles and Robotnik all end up on the same side, if only for one episode.
  • The WildBrain upload spells the title “New Echinda in Town”.

Watch the Episode

The full episode, uploaded by WildBrain’s official Sonic The Hedgehog – WildBrain YouTube channel (checked 6 November 2026).

Part of our Sonic Underground episode guide. The series page covers the characters, the songs, the prophecy and the show’s history.

Sources: titles, writers, songs and air dates from Luke’s original Sonic Scene guide, cross-checked with Wikipedia, Sonic Wiki Zone and Sonic Retro (Wayback copy); synopsis written for Sonic Scene from the episode, its official description and several fan references; title card and screenshots via Sonic Wiki Zone, copied to our media library.