Silver the Hedgehog is a character from the Sonic the Hedgehog series. He is a hedgehog from the future of Sonic's world who has the ability to use psychokinesis and is one of four characters in Mario & Sonic at the Olympic Winter Games that did not appear in it's precursor. He is the rival of Waluigi. Silver the Hedgehog first appeared in Sonic the Hedgehog (2006).
Super Smash Bros. Brawl
Silver made a cameo in Green Hill Zone. Silver is a trophy too.
Mario & Sonic at the Olympic Winter Games
Silver appears in Mario & Sonic at the Olympic Winter Games as a skill type playable character. His signature move for the Wii version is Levitate and Teleport Dash for the DS. A trailer shows him and Yoshi forming a new friendhsip.
Mario & Sonic at the London 2012 Olympic Games
Silver makes his second playable appearance in the third installment of the Mario & Sonic series, Mario & Sonic at the London 2012 Olympic Games. He is once again, a Skill type.