- Not to be confused with the Black Comet.
The White Comet was discovered by Jordann and Kayla-La, the great-grandparents of Dimitri and his brother Edmund. The White Comet was on a direct course to impact and destroy Echidnaopolis. Because the two had managed to discover it in time, the Echidnas were able to conceive a way to save their city. By harnessing the power of twelve Chaos Emeralds, Echidnaopolis and a large part of the planet around it was lifted from Mobius' surface into the sky. The comet struck the continent of Downunda where the city had formerly been. When Knuckles became Chaos Knuckles he went back in time to prevent the Floating Island from coming to be, the White Comet didn't destroy Echidnaopolis but the earthquake caused by the comet leveled the entire city, luckily Chaos Knuckles reversed what he did.