Mobius Encyclopaedia
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You may be looking for the Light Mobius version of Sonia Acorn, the Future Mobius version of Sonia Acorn or Sonia the Hedgehog from the Sonic Underground Zone.

Sonia Acorn was a member of a group of Freedom Fighters existing in the timeline leading to Mobius P.X.E. She was the daughter of Sonic the Hedgehog and Sally Acorn as well as Manik Acorn's sister. Sonia appeared on a painting in Edmund the Echidna's library in Portal together with the rest of the Freedom Fighters.

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