Sonic

Sonic the Hedgehog[a] is the protagonist of the Sonic the Hedgehog video game series published by Sega, as well as numerous spin-off comics, animations, and other media. Sonic is a blue anthropomorphic hedgehog who can run at supersonic speeds and curl into a ball, primarily to attack enemies.

https://en.wikipedia.org/wiki/Sonic_the_Hedgehog_(character)