Lendsey2004
After his defeat at Egg Planet Park, Dr. Eggman finds the Time Eater, which manipulates time and space. Using its power, he summons his past self and begins a plan to rewrite the timeline. Sonic is sucked into the Time Eater, which suddenly appears, and when he wakes up, he finds himself in a completely white world. Cooperating with his smaller self that he met there, he restored the world and his friends, whose life force and color had been sucked out of them, and defeated the two Dr. Eggmen and the Time Eater.
(Sonic Generations belongs to SEGA, Pokémon belongs to Nintendo)