Shadow the Hedgehog (Japanese: シャドウ・ザ・ヘッジホッグ, Hepburn: Shadō za Hejjihoggu) is a character appearing in Sega's Sonic the Hedgehog video game franchise. Shadow was created by Takashi Iizuka and Shiro Maekawa, and debuted in the series' 2001 installment Sonic Adventure 2. Although this was intended to be his only appearance, Shadow proved so popular among fans that developer Sonic Team decided to include him in 2003's Sonic Heroes. Shadow has since featured in numerous entries in the franchise, including a self-titled spin-off game in 2005. He also appears in Sonic television adaptations, comics, and merchandise.