- Age: 14
- Gender: Male
- Race: Hedgehog
- Color: Silver-white
- Birthday: Unknown
- Birthplace: Somewhere in the future
- Favourite color: Shade of blue and green
- Favourite food: Unknown
- Likes: Freedom, peace, seeing happy people, using his abilities and serving the good of mankind
- Dislikes: Being interrupted in route to his goals organizing details and being alone
- Romance/Love Interests: Blaze the Cat
- Best friends: Sonic the Hedgehog, Miles Tails Prower, Mighty the Armadillo and Ray the Flying Squirrel
- Close friends: Everyone
- Rivals: Shadow the Hedgehog, Knuckles the Echinda Dr. Eggman and Eggman Nega
- Family/Relatives: Throughout the series, Silver has no family. In high school version his parents were Crystal (mother) Iron (father) and has two sisters Kylie and Starlight
- Theme song: Dream of an Absulation by Lee Brotherton
- First Appearance (game): Sonic the Hedgehog (2006)
- Ability type: Flight
- Powers: Psychokinesis
His main role in the games is to protect the future by changing the problems in the past with the help from his psychokinesis, which are psychic powers. He apparently has the ability to time-travel, though this is implied to be done with the assistance of future technology.
Silver is best described as having "a strong sense of justice" and it is this personality trait that motivates him to head back into the past to correct the future. He also believes in standing up for those who can't stand up for themselves. This led him to accept Blaze when everybody else was teasing her for her pyrokinetic abilities. When he pursues an enemy, he does it with a relentless determination and will make alliances and rivalries very easily, which makes him easily tricked by others.
Although seemingly serious in nature, an interview states that Silver is young and somewhat immature.  Blaze comments on this several times, and he is described as being naive and insecure when he is alone. Silver is also a regular sweetheart and is always ready to protect those in need and lend a helping hand. He also seems to be somewhat cocky.
Silver also has a disliking for anyone that gets in his way, most likely in Sonic Rivals and Sonic Rivals 2, which could show that Silver can be bad tempered, extremely rude, and bossy to anyone that's not helpful in his mission. When Silver is not focused on his current mission or does not have a task at hand however, he is very friendly and a good company to have around.
Silver, in his first appearance, possessed no super-speed like Sonic and Shadow (outside of cutscenes where he used his Psychokenesis to fly at high speeds).