Fan Casting Sonic the Hedgehog (1991) in Sonic the Hedgehog Sorting - All Games/Media

Sonic the Hedgehog (ソニック・ザ・ヘッジホッグ Sonikku za Hejjihoggu) is a 2D platformer video game developed by Sonic Team and published by Sega for the Sega Mega Drive. It is the launch title of the Sonic the Hedgehog series and marks the official debut of Sega's current mascot, Sonic the Hedgehog, who can run at supersonic speeds. The game follows Sonic as he thwarts the plans of his arch-nemesis, Doctor Eggman, who is on the hunt for powerful relics known as the Chaos Emeralds on South Island. The game also marked the beginning of the overarching Death Egg saga.