Can you be shadow the hedgehog

Yes. In Sonic Adventure 2 (Battle), only in Dark Mode and Last Story. Also in Sonic Battle, Sonic Heroes, Shadow the Hedgehog, Sonic the Hedgehog (2006), Sonic Riders, Sonic Riders: Zero Gravity, Sonic Free Rider, Sonic and the Secret Rings, Sonic and the Black Knight, Sonic Chronicles: The Dark Brotherhood, Sonic Rivals, Sonic Rivals 2, Sega Superstars, Sega Superstars Tennis, Sonic & Sega All-Stars Racing, Sonic & All-Stars Racing Transformed.