Nega-Mother Wisp

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Nega-Mother Wisp
Extra level, Sonic Colours (DS)

Concept art.

The Nega-Mother Wisp is the secret final boss in the Nintendo DS version of Sonic Colours. This is the true final boss instead of Eggman himself as was done in the Wii version of the game. It is unlocked by collecting all of the 7 Chaos Emeralds through the games Special Stages. The Nega-Mother Wisp is actually Yacker's mother, who has been put under mind-control by Dr. Ivo "Eggman" Robotnik with his mind-control device. In one of the last cutscenes, Yacker asks Sonic to stop his mother. Then, Sonic transforms into Super Sonic and attempts to destroy the over-sized Nega-Wisp. This Wisp is not only the mother of all Wisps but also the creator of Planet Wisp.