|This exists primarily or exclusively within the Pre-Super Genesis Wave continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Chosen One is a being prophesied of by the Ancient Walkers, together with the Avatar and another champion.
According to prophecy, the Chosen One would bring an end to Mammoth Mogul's destruction of the multi-verse and bring about a new era known as The Great Harmony. These signs point to Tails as the most likely candidate for the Chosen One, and this was later proven true by the former Guardian Athair. (StH: #56, #149, #150, #169, TMS: #3)