He is a mobian hedgehog and a Knight of Kronos in-training, gifted with psychic abilities from a post-apocalyptic alternate future in the year 3437 P.X.E., two hundred years away from the Mobius Prime's timeline. Silver is driven by a mission to learn the identity of a supposed traitor among the Knothole Freedom Fighters whose actions ruined the future, and hopes to find this person in the past in order to save both that period and his own. To this end, Silver has traversed both time and space, journeying into the past of Mobius Prime as well as other worlds including Light Mobius and Dark Mobius, effecting minor changes in his own time, but ultimately unable to undo its devastation. After numerous failures, he was stranded in 3237 to solve the problem once and for all. With his solo efforts proving fruitless, Silver then joined Director Harvey Who's Secret Freedom Fighters in exchange for help in his research. After learning the culprit's correct identity, Silver's objective changed with the intent of rescuing Sally Acorn to clear up a misunderstanding.