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This object exists primarily or exclusively within the Sonic Underground continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.

Sonic Tonic is an object that appears in the Sonic Underground television series. It is a serum created by Dr. Robotnik which grants super speed.

Description[]

Frame-039

The side-effects of the Sonic Tonic on Dingo, from "Sonic Tonic".

The Sonic Tonic is a green liquid created from the essence of the Velocitree. When poured onto one's feet, it has the power to give the user supersonic speed that can rival that of Sonic, although a side effect of this liquid causes the user's feet to eventually grow extremely large, preventing them from walking. This can be remedied by simply sweating out the Sonic Tonic from one's skin.[1]

References[]

  1. Edens, Mark (17 September 1999). "Sonic Tonic". Sonic Underground. Season 1. Episode 15. First-run syndication.
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