Sonic Underground 2: Crusaders of the Chaos Emeralds (a.k.a Sonic Underground Season 3: Chaos on Mobius in Japan) is the third season of Sonic Underground. It takes place about 19 years after the events of Season 1 and 2. This time it just doesn't focus on Sonic Underground's search for Queen Aleena, but the search for the mystic Chaos Emeralds.

Sonic Underground 2: Crusaders of the Chaos Emeralds
Created by User:
Writer(s) User:

Alex Hirsch (Not Really)

Director(s) User:
No. of episodes 45
Run time 30 minutes
Rated TV-7
Network 4KidsTV (2012-present)

Nickelodeon (2013)

Netflix (2012)

Starring Roger Craig Smith

Cindy Robinson

Vincent Martella

First aired August 1,2012 (sneak peek)

August 18,2012

Status Season 2 coming in 2013.

Differences between original Sonic Underground

There are several differences between the original Sonic Underground and Sonic Underground 2: Crusaders of the Chaos Emeralds. Some are noticably different, while others are weirder then you think.


In the original Sonic Underground, Jaleel White did the voice of all 3 hedgehogs. This time the characters got voiced by different people, except for Sleet and Dingo. The cast is below.

  • Sonic the Hedgehog: Roger Craig Smith
  • Sonia the Hedgehog: Cindy Robinson
  • Manic the Hedgehog: Vincent Martella
  • Queen Aleena: Kate Higgins
  • Dr. Eggman: Mike Polleck
  • Sleet: Maurice LaMarche
  • Dingo: Peter Wilds

Vincent Martella, who voiced Phineas Flynn in the Disney TV series Phineas and Ferb, is a new voice to the Sonic series. He voices Manic. Sonia's voice actor was replaced with Cindy Robinson, who currently voices Amy Rose.


New characters join the Sonic Underground, as well as the Freedom Fighters (called "The Resisters") from SATAM. Also people join Eggman in battle.The cast for them is below. There are more to come.

  • Miles "Tails" Prower: Kate Higgins
  • NICOLE: Lisa Ortiz
  • Amy Rose: Cindy Robinson
  • Rotor the Walrus: Dan Povemire
  • Bunnie Rabbit: Ashley Tisdale
  • Knuckles the Echidna: Travis Willingham
  • Antoine D'Coolette: Dan Green
  • Shadow the Hedgehog: Kirk Thornton
  • Sliver the Hedgehog: Quinton Flynn

It's noticed that Blaze isn't in the cast, but Sliver is.


Sonic Underground has disbanded. After a fight backstage about who was off tempo, Sonia and Manic left Sonic, alone. Years later, while Sonic is cleaning his house, he finds his medallion.

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