Silver the Hedgehog

シルバー・ザ・ヘッジホッグ

Silver and his friend, Blaze, reside in a devastated future, 200 years after their era was destroyed by an immortal entity known as Iblis, the Flames of Disaster. Despairing because they lack a way to truly defeat Iblis, Silver and Blaze encounter a mysterious being named Mephiles, who claims he can stop the Flames of Disaster by destroying the "Iblis Trigger," a being who will unleash Iblis. Mephiles identifies the Iblis Trigger as Sonic and sends Silver and Blaze to Sonic's time period.
Upon arriving in the past, Silver and Blaze are separated. While searching for Sonic, Silver meets Amy Rose, who is also looking for Sonic. Silver and Amy assist each other in their search, though both are unaware they are seeking the same person, as well as what they intend to do with him. Upon finding Sonic, Silver attacks him, only to be stopped by Amy. Seeing how much Amy cares for Sonic makes Silver question his motives, but reuniting with Blaze strengthens his resolve.
Infiltrating Dr. Eggman's base, Silver recovers a Chaos Emerald and keeps it for himself. Silver encounters Sonic again, only to be stopped and attacked by Shadow. Shadow overpowers Silver using Chaos Control, but Silver, attempting to strike back, takes out his Chaos Emerald and utilizes Chaos Control simultaneously with Shadow, creating a rift in time and space. To find answers to their respective questions, Silver and Shadow enter the rift and find themselves ten years in the past, at the time of the Solaris Project's failure (an event known in the present to have caused great devastation). They arrive during an explosion that injures or kills everyone within its radius and releases Mephiles and Iblis, revealed to be two separate forms of the god Solaris. Silver chases after Iblis, who is sealed away by the King of Soleanna into the body of his daughter, Princess Elise, using a Chaos Emerald. Before succumbing to his injuries from the explosion, the King tells his unconscious daughter never to cry, as it would unleash Iblis. Silver then realizes that Mephiles has tricked him and that Elise is the "Iblis Trigger." Before returning to the present with Shadow, Silver gives his Chaos Emerald to Elise.
Realizing that Sonic is not the Iblis Trigger, Silver is informed by Blaze that Princess Elise has surrendered to Eggman and was taken away on his battleship. Silver and Blaze fear that Eggman plans to release Iblis. On his way to rescue Elise, Silver encounters Sonic and teams up with him. Before they can reach Eggman's battleship, it crashes and explodes due to a system malfunction. Silver and Sonic use Chaos Control to travel back to before Eggman's ship launched. Sonic travels to the past alone to save Elise from her grim fate, but not before giving Silver a Chaos Emerald.
Silver and Blaze return to their timeline in an effort to stop Iblis, now knowing they do not have to alter the past to save the future. Finally defeating Iblis, Silver attempts to seal the Flames of Disaster away into his soul, but he is rejected. Blaze offers herself as the vessel for Iblis and is sealed away to another dimension, finally restoring peace to their time.