Yuji Naka
Programmer Yuji Naka and artist Naoto Ohshima are generally credited with creating Sonic. Most of the games are developed by Sonic Team. The original "Sonic the Hedgehog" (1991) was released to provide Sega with a mascot to rival Nintendo's flagship character Mario. Sonic was redesigned by Yuji Uekawa for "Sonic Adventure" (1998), with a more mature look designed to appeal to older players.