Sonic the Hedgehog Sonic the Hedgehog Sonic the Hedgehog is a video game franchise produced by Sega centering on a series of high-speed platform games. Sonic, the protagonist, is an anthropomorphic blue hedgehog with supersonic speed. Typically, Sonic must stop antagonist Doctor Eggman's plans for world domination, often helped by his friends, such as Tails, Amy, and Knuckles. The first "Sonic the Hedgehog" game, released in 1991, was conceived by Sega's Sonic Team division after Sega requested a mascot character to compete with Nintendo's mascot Mario. Its success spawned many sequels and helped Sega become one of the leading video game companies during
Sonic the Hedgehog (character) "Sonic & Knuckles", both released in 1994, saw Sonic and Tails battle Robotnik again, with the additional threat of Knuckles, who is tricked by Robotnik into thinking Sonic is a threat. "" (2010–2012) continues where the story of "Sonic 3" left off, reducing Sonic to the only playable character and releasing in episodic installments. The second episode sees the return of both Tails as Sonic's sidekick and Metal Sonic as a recurring enemy. Other two-dimensional platformers starring Sonic include "Sonic Chaos" (1993), "Sonic Triple Trouble" (1994), "Sonic Blast" (1996), "Sonic the Hedgehog Pocket Adventure" (1999), "Sonic Advance" (2001), "Sonic Advance