The term SEGA HEDGEHOG is a reference to the popular video game character SONIC the Hedgehog, who first appeared in the 1991 Sega Genesis game of the same name. SONIC is a blue anthropomorphic hedgehog with supersonic speed and the ability to curl into a ball, primarily to attack enemies. He is often accompanied by his two best friends, Miles 'TAILS' Prower and Knuckles the Echidna. SONIC has become one of the world's most recognizable video game characters and is often seen as the mascot of Sega.