- This article is for the Archie Comics character, for the Sonic the Comic character, see King Sonic.
25 Years Later (Unaltered)
Prior to transforming the future, Sonic, at some point in the past, stopped Knuckles, after the latter managed to once again transform into Chaos Knuckles, from using his vast powers and energy to recreate Mobius as he saw fit by accidentally using an alien device on him. As a result, Knuckles returned to normal and his right eye was ruined and had to be replaced by a bio-mechanical implant; it was this event that caused the two to be openly hostile against each other.
It was also around this time that Dr. Eggman was defeated by Chaos Knuckles once and for all (even though Knuckles later stated that it was Sonic who defeated Eggman).
In the years that followed, Sonic had a falling out with his best friend Tails and the two haven't seen or spoken to each other in years. Sonic later married Sally and had two children with her, Sonia and Manik, who both inherited their father's speed.
Sonic, after becoming king, became distant to those around him, but Sally put up with this, believing that her husband was going through a midlife crisis and the pressures of ruling without being raised to do so.
Unfortunately this future had a major crisis facing it. Following the celebration of Lara-Su's sixteenth birthday, King Sonic's family paid a visit to Angel Island. When Sonic met with Knuckles, he learned that Mobius faced imminent destruction. Cobar and Rotor then revealed to Sonic that he was to blame of the upcoming crisis(with Knuckles yelling 'HAH!' proving that Sonic was wrong about Knuckles being the cause of this), mentioning that it was beacuse of Sonic's access of the Cosmic Interstate, his final battle with Dr. Ivo Robotnik, and his detonation of the Xorda Quantum Dial, the fabric of space and time was in danger of collapsing, which would cause Mobius to be destroyed. Sonic and Knuckles then said that that he is not the only one messing around with time and space, Knuckles points out that the Dark Egg Legion as messed with time and space and admits that he's done it too, but Cobar points out that they've done the math. In an attempt to fix the problem, Sonic and Knuckles agreed to a truce. Sonic agreed to use the Tachyon Displacement Chamber, a time machine built by Eggman and kept in storage for years, to travel to the past and collect information so that the problem could be rectified. Sonic entered the chamber, but something went wrong and he disappeared and the time line was irrevocably altered...
25 Years Later (Altered)
Upon using the Tachyon Chamber in the previous timeline, King Sonic was sent back twenty-five years in the past to restore stability to the Zone by healing the temporal wounds. While he restored existence, he forever altered the status quo of his timeline.
Because everyone located in close proximity of the Tachyon Chamber would carry memories over to the new timeline, King Sonic would fully recall his previous existence as well. This would prove to take an extreme mental toll on the former king who was now forced to live on the slums knowing now that his children, Sonia and Manik are erased from existence. His former wife, Queen Sally had also married the oppressive King Shadow who was now head of the kingdom.
Sonic would soon be found by Tails and Lara-Su, who were looking for his assistance on combating Shadow’s tyranny. Sonic would immediately reconcile with Tails and join the duo, hoping to restore his life to what it was like in the previous timeline. But before any of them could act, they were all placed under arrest by Knuckles who was now King Shadow's chief enforcer.
Sonic, Tails, and Lara-Su would be locked up in King Shadow’s cell, along with the tortured and battered Rotor. Chief Enforcer Knuckles would arrive to reveal it was all a plan to betray King Shadow and he released the four prisoners. Sonic and Knuckles would then proceed to go take on King Shadow himself with Knuckles admitting he felt guilty for turning against his king.
Upon arriving in Shadow's royal chambers, Knuckles would escort Queen Sally away leaving Sonic to battle the king. Yet the battle was short as Shadow was immortal and hasn’t grown physically older; he would use his physical prowess against the aged Sonic. Yet Lara-Su would appear and interrupt the battle, claiming she was more physically on par with Shadow. King Shadow was more evenly matched and both would call on their Chaos Powers to battle. Yet, Lara-Su would overcome by freezing Shadow in time with a powerful Chaos Control, effectively defeating and overthrowing the king with a burn on her shoulder by a Chaos Spear that just grazed her shoulder.
Sonic would then reconcile his relationship with Queen Sally; who claimed she was never in love with Shadow, but feared his power was potentially dangerous to Mobius and married him in an attempt to tame him. The two would recall their past love and agreed to move forward where they left off. Then once again, King Sonic would then bring up the ideas of children to Sally.
Five Years Later...
Five years after Shadow's defeat, Sonic has restarted his family with Sally and his two children Manik and Sonia. The day before the celebration of his five year rule, he watched a documentary on the "five years of peace" with his family. Sally gave Sonic a shoulder rub, noting that he's very tense. Sonic then stated that, while he can save the world no sweat, speaking in public sends his stomach into loops and corkscrews (a notably obvious reference to his "platforming" days in the video games). When the children get excited that Lara-Su is babysitting them, Sonic is seen upset, obviously remembering the previous life he had in the original timeline. The next day, Sonic attended the celebration of the Five Years of Peace, when a missile is launched at him, putting the rest of the Royal Family in danger as well. The missile was destroyed, however, by Silver the Hedgehog.