Silver

Silver the Hedgehog is a hedgehog from the future who has the ability to use psychokinesis. His voice actor is Pete Capella.

Super Smash Bros. Brawl
Silver the Hedgehog made a cameo on the Green Hill Zone stage along with Tails and Knuckles. He also appears as a trophy and a sticker in the game.

Mario & Sonic at the Olympic Games
He was originally supposed to appear in the original but was scrapped later on. A beta file of Silver was found on the European version.

Mario & Sonic at the Olympic Winter Games
Silver appears in Mario & Sonic at the Olympic Winter Games as a skill playable character. His signature move for the Wii version is Levitate and Teleport Dash for the DS.

Official Profile and Statistics
''Silver the Hedgehog is a new competitor for Team Sonic. Coming from the distant future with telekinetic abilities, Sliver's signature moves are the Levitate ability on the Wii and DS and Teleport Dash ability on the DS. Expect the unexpected when this time-travelling hedgehog takes on the Olympic Winter Games.''