Silver the Hedgehog (シルバー・ザ・ヘッジホッグ Shirubā za Hejjihoggu?) is a fictional anthropomorphic silver-colored hedgehogfrom the Sonic the Hedgehog series. Silver hails from at least 200 years into the future where his role is to protect the future by changing the problems or catastrophes in the past, thus preventing the ruination of his time.
Silver is a kind-hearted, positive and well-meaning individual, driven by a strong sense of justice to right the wrongs of the past to uphold peace, though he tends to be somewhat naive and immature. To aid him in his tasks to save the future, Silver makes use of his psychokinetic abilities, an ability from his time that is considered second-nature, that allows him to levitate and control objects and himself simply with the power of his mind.
Silver was created as a psychokinetic in order to utilize the new physics engine added to Sonic the Hedgehog (2006).
Official concept artwork released by Sonic Cult shows an early design of Silver. The main differences from the current final design include a long orange amount of chest fur around his neck, and bright blue eyes. His boots are also quite different. It is unknown, however, whether Yuji Uekawa, the main character designer of the Sonic series, actually produced the artwork.
More concept art of Silver was released in an interview with IGN, which was generally less similar to his current design. Notable designs include a hedgehog wearing a futuristic headset and another with markings on its hair. It is also revealed that Silver was originally planned to be a mink named "Venice"  after Venice, Italy, the placeSoleanna is based on. His initial color was orange, which was changed to white-grey later, resulting in Silver's final name. He was also proposed to be a mink, but that idea was later abandoned. Silver is said to have gone through over 50 designs before reaching his final look. 
As for Silver's current design, Silver wears gold cuffs that go around his wrists and legs that rest just a bit higher than his gloves and boots. Cyan lines encircle the cuffs. Silver's boots are indigo colored down the side and have teal-colored tips. A white line goes straight down the middle to the teal tip. On the top of the middle of his shoe is a red gem-like adornment. The design on his gloves have a cyan circle that has a line at the bottom that goes down to his cuff. These channel his telekinetic ESP abilities through his shoes as do the ones on his gloves.Silver has three conflicting back stories for Sonic the Hedgehog. On the game website, it states he came from a happy future that was never destroyed, and ended up in the past where he learned his future would be destroyed and tries to prevent it from changing for the worst. In the game guide, it is implied Silver is from the present and ends up in the future where he learns that it was destroyed during the events in Sonic the Hedgehog and goes to seek what would destroy the future when he returns to the past (though it is mentioned in his walkthrough that he is from the future; see below).
The actual story is that in the game, Silver lives in a destroyed future and goes to the past to change the future for the better. He is from 200 years or possibly more in Sonic's future. In Sonic the Hedgehog, while Sonic, Tails, and Knuckles are exploring the future, Knuckles says, "How could this be our future?" The second and third time the player discovers that Silver's world is the future of Sonic's world, is inSonic Rivals and Sonic Rivals 2 respectively. Right before Eggman Nega turns Sonic’s world into a card, Silver clearly states “What?! But that'll mean my future will be destroyed too!” In Sonic Rivals 2, he says to Espio and Knuckles, "I have to save your world or else my world will be destroyed as well!" Silver first appears in Sonic the Hedgehog. In a distant, post-apocalyptic future, Silver, with his best friend and partner, the pyrokinetic cat Blaze, work together in constant attempts to defeat the fiery monster Iblis; however, all of their attempts so far have been in vain, as Iblis is immortal and can resurrect himself through his ashes. Frustrated with this, Silver desperately wonders how they can permanently destroy him, and are then approached byMephiles who tells them of the 'Iblis Trigger', the one responsible for the resurrection of Iblis, and reveals that they must kill him to prevent Iblis's return. He states that the Iblis Trigger is Sonic, and sends himself, Blaze, and Silver back in time to when Sonic was still alive, although Silver and Blaze are separated from him in the process. Silver finds Sonic after his failed attempt to save Princess Elise from Dr. Eggman during the Festival of the Sun, but is mistaken for Sonic himself by Amy and distracted before he can strike. Amy decides to help him find the person he is looking for, though he is largely unwilling to accept her help. Eventually, he warms up to her and decides to help Amy in exchange for her help, although they don't know that they are both looking for the same person: Sonic. Silver fighting against Sonic.Soon afterward, Silver finds Sonic and attacks him. Sonic initially had the upper hand, but showed concern for him, even asking if he was alright in the end. Silver psychokinetically throws Sonic into a building, incapacitating him. Silver wonders if Mephiles was joking, wondering how someone as weak as Sonic apparently could possibly cause the apocalypse. Sonic attempts to run after Silver when Eggman captures Elise again, but Silver knocks him down and is about to deliver the final blow when Amy intervenes, allowing Sonic to escape. Silver tells Amy about the world's devastation due to Sonic's actions, but Amy refuses to believe that Sonic would ever do such a thing. She states that she would choose Sonic over the world any day even if it was true, and immediately leaves Silver. Disheartened, Silver leaves to ponder over whether or not killing Sonic to save the future is truly the right thing to do.
Blaze finds Silver at the docks and, after some conversation, she convinces him that they need to save the future by any means necessary. After failing to track Sonic down at Eggman's snowy mountain base (though they acquire Elise's blue Chaos Emerald there), they encounter Mephiles, who tells them that Sonic is at the terminal station. After tracking him down, Silver paralyzes Sonic with his psychokinesis, allowing Eggman to capture Elise once again in the confusion, and is about to kill him, when Shadow, whom Silver at first mistakes for Mephiles, intervenes, once again allowing Sonic to escape. The two fight to a standstill, and Shadow uses Chaos Control to evade Silver's intended punch and kicks Silver in the back of the head, knocking him to the ground. Refusing to be defeated and desperate to save his world, Silver pulls out his Chaos Emerald and, much to Shadow's surprise, induces Chaos Control at the same time as Shadow, opening up a time portal to the Soleanna of ten years ago. Shadow tells Silver of Mephiles' true intentions, and they both decide to go back to the day that the Solaris Projectwent haywire and see what really happened.
Once they arrive, Shadow and Silver witness the project's failure first hand, with a machine exploding and the Duke of Soleanna getting badly injured while protecting Elise, then only seven years old, from the blast. The hedgehog duo splits up, Shadow pursuing Mephiles, and Silver pursuing Iblis, while the Duke gives Shadow the Scepter of Darkness to imprison Mephiles. Silver tracks down Iblis and paralyzes him with his psychokinesis, and the dying Duke (despite Silver's insistence that he run) seizes this opportunity to use a Chaos Emerald to seal Iblis within the unconscious body of his daughter, entrusting Silver to take her to a safe place, and telling Elise not to cry, as doing so would release Iblis, in his dying words. Silver carries Elise out of the lab, meets up with Shadow, who has successfully captured Mephiles, and sets Elise down next to a nearby tree. Shadow leaves the Scepter of Darkness with Elise, knowing what becomes of it in the future, and they both open up another time portal to the present, which Shadow immediately jumps through. Silver, however, is just about to follow when he hears Elise call for her father in her sleep. Feeling sorry for her, Silver gives Elise his blue Chaos Emerald as a good luck charm, and then follows Shadow through the portal (This explains how the present-day Elise possessed the blue Chaos Emerald at the start of Sonic's story).
Upon their return, Silver reveals to Blaze that Mephiles had lied about Sonic being the Iblis Trigger, and realizing that Eggman may intend to release Iblis, they go to help Sonic save Elise from Eggman, arriving just in time to save Sonic from a small army of Eggman's robots; unsurprisingly, Sonic is somewhat wary of Silver at first, but graciously accepts his help, nonetheless. However, they do not make it before the Egg Carrier crashes into a mountain and explodes, killing both Elise and Eggman. After a moment of grieving, Sonic and Silver use Chaos Control to allow Sonic to travel back in time to before the Egg Carrier exploded in order to save her, and Sonic gives Silver his Chaos Emerald in order for Silver and Blaze to return to their own time, which they do. Silver and Blaze defeat Iblis once more, and he attempts to use himself as Iblis's vessel; while he is not accepted, Blaze is, and she seals Iblis within herself, and uses Chaos Control to teleport herself into another dimension to ensure that Iblis does not return, much to Silver's dismay and sadness.
Later on, after Mephiles kills Sonic and merges with Iblis, Silver is among the characters who are transported to Solaris's dimension, where they all work together to gather the Chaos Emeralds in order to resurrect Sonic and defeat Solaris. In the end, Sonic, Shadow, and Silver successfully destroy Solaris, and Sonic and Elise travel back in time to when Solaris was just a flame and extinguish him, erasing the game's events from history, and thus, resetting the timeline. What becomes of Silver's world after this is unknown. Silver is another one of Sonic's rivals, backed by his confirmed playable appearance in Sonic Rivals. He is responding to a distress signal, though he doesn't know who is sending it. He later finds out that Eggman Nega is linked to this distress signal and was using a special camera to turn people into cards. Silver states that he will bring Eggman Nega back to the future where he belongs. He is also given two alternate costumes. As the events ofSonic the Hedgehog never happened, Silver and Sonic are introduced to each other for the first time, and it seems that Sonic has truly forgotten the events of the previous game (though it is implied at the end that he and Elise retain their memories of the events to some extent), as he does not seem to recognize Silver.
In the game: Sonic The Hedgehog*Xbox PS3*
Silver thinked that Sonic was the "Iblis Tigger" then he starts to attack him over and over again.
And when Shadow tells Silver that the Ibils Tigger is Mephiles
Silver stops trying to kill Sonic.
Silver stays track on Ibils, Sonic stays track on Dr. Eggman, Shadow tracks down
At a cutseen
Sonic nd Eilse were walking then Mephiles used a spear and made Eilse cry,
Andd then when she cried i broke Ibils steal then
Soris was born
Tails, Rouge, Knuckles, Amy Eilse, Shadow, Silver,
Tails said "What happend?
Amy: "What's going on?
Knuckles: "What it because of that light?
Silver"And thats why he wanted me to kill Sonic before!" *shakes head*
- his world sad plays*
Amy: "SONIC! *cries*"
Eilse: "I dont think sonic's dead yet..."
Tails: "Then we must work together!"
Shadow: " Maybe the Chaos Emerald may bring back his soul"
Silver" You can do it Princess!"
Amy: "I'm doing for like! Sonic!"
Amy: "Look after him!"
Everyone runs off but not Elise
When they find the Chaos Emeralds
Sonic floats in the air,
Eilse kisses Sonic
Shadow, Silver and Sonic turn Super.
And now the final battle begins..........
Edit made by
Tails The Freedom Angel