Does Silver the Hedgehog appear in any Sonic the Hedgehog games

Silver the Hedgehog is found in the following games: Sonic the Hedgehog (2006 release/playable), Sonic and the Secret Rings (unlockable character), Sonic Riders: Zero Gravity (unlockable character), Sonic Rivals and Sonic Rivals 2 (both playable), and he makes a cameo in the background of the Green Hill Zone stage in Super Smash Bros. Brawl.