You may be looking for Silver the Hedgehog.
Silver ATAP

Silver at the Olympics.

Silver is a psychic powered hedgehog from an alternate reality.

He was seen participating in the Olympic Games alongside Sonic and his friends, only for him to be knocked out by an exploding hammer while competing in the hammer throw, allowing him to be captured by Dr. Eggman, along with Sonics other friends. However, it wasn't long before Sonic was able to defeat Metal Sonic in a series of Olympic events, and rescue Silver and the others. (StH#242)

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