Classic Sonic has multiple and different backstories (finishing this later im kinda lazy right now)

• In Story Gaiden, a story in the third volume ofSonic the Hedgehog Story Comic, he's the emblem of an American Air Force member who was nicknamed "The Hedgehog". This Air Force member died in a plane explosion during a test flight attempt to break the sound barrier but luckily, his jacket was preseverd because he decided to swap it with the jacket of another pilot who participated to the test flight. That pilot decided to name this jaket "Sonic the Hedgehog" as a tribute. One day, the pilot decides to gift the jacket to the daughter of the Air Force member, named Meg, and everytime she wears the jacket, she feels like her father is looking over her and protecting her. A while after, Meg goes to an air show but an accident happens and caused a big fire. Meg is about to collapse because she's trapped in the fire but before collapsing, Classic Sonic shows up and she moves towards him, thus helping her to go away from the flames. She sees Classic Sonic doing his finger sign (that her father does) before fainting. She wakes up in an hospital a week after the event and she notices that the Sonic emblem on the jacket disappered.


• In Sonic the Comic, he was a brown hedgehog and lived in Emerald Hill Zone, a location in Moebius. He befriends and decides to help Dr Ovi. Kintobor's in his researches after discovering his laboratory. Classic Sonic claiming to be he's the fastest hedgehog aroused Ovi's curiousity so he decided to run experiments on him. As the results of the experiments, the scientific created Power Sneakers (the shoes Classic Sonic wears). When testing his speed and the Power Sneakers on a treadmil machine, Classic Sonic ran so fast to the point of breaking the speed of sound he made an accident that turned his quills blue.


• In Sonic Underground, he's one of Queen Aleena's triplets, thus making him a prince (and the future king of Mobius). Separated from his mother and siblings after a prophet told his mother to do so to save their lives due to them being placed a bounty on, he's raised by his uncle who taught him how to play and electric guitar after his foster home got destroyed and his foster parents got arrested. Years after, he reunites with Sonia, his sister and Manic, his brother. They form a music band together in hope to find their mother.

※Considered as Sonic's younger self.

TEXT
🢃

※Considered as Sonic's younger self.

TEXT
🢃

※Considered as Sonic's younger self.

TEXT
🢃

※Considered as Sonic's younger self.

TEXT
🢃

※Considered as Sonic from another dimension.

He's pursued in Green Hill Zone by the Time Eater, an entity that can control time and space because of Eggman and his past self using it to erase his past failures and defeats against Sonic and succeed his world domination plans. Teleported to the White Space after being caught by the Time Eater, he meets Modern Tails, Amy and Knuckles then Modern Sonic later on in a Boss Gate. They see each other again in the White Space and meets Classic Tails. The two Sonic and two Tails team up to save the rest of Modern Sonic's friends who are trapped in the White Space after being sucked in it by the Time Eater during his future self's birthday. After everyone got saved, the two Sonic team up and turn into Super Sonic to defeat the two Eggman who are controlling the Time Eater.After winning the battle, everything goes back to normal and everyone is teleported to Modern Sonic's birthday party. There, Classic Sonic is thanked by his future self and tries to do the Boost ability (and fails). On his way back to his dimension, his future self tells him to enjoy his future because it will be great.
🢃

※Considered as Sonic from another dimension

TEXT
🢃

※Considered as Sonic from another dimension

TEXT
🢃

※Considered as Sonic's younger self

TEXT