What is the name of the silver hedgehog from the future?

The silver hedgehog from the future is Silver the Hedgehog.

Silver is a silver-furred hedgehog who comes from roughly 200 years in Sonic's future. He first appeared in the 2006 game Sonic the Hedgehog, where he travels into the past with Blaze the Cat after being led to believe that Sonic is responsible for the destruction of his world. That mission places him in conflict with Sonic before he learns the truth.

Silver's defining power is telekinesis. He can lift, throw, and manipulate objects without touching them, creating a style of play distinct from Sonic's speed and Shadow's Chaos-based abilities. He can also use the Chaos Emeralds to transform into Super Silver.

Blaze the Cat is often confused with Silver because they travel together in his debut story, but Blaze is a princess from the Sol Dimension and uses fire-based powers. Shadow is another hedgehog, but he is black-and-red and is not from the future.