Seaside Island (Mirror Dimension)

Bygone Island is a location that appears in Sonic Boom television series. It is an alternate version of Bygone Island from the Mirror Dimension.

Areas

 * Seaside Coast

Settlements

 * Sonic's Shack

History
Not much is known about this place, except that it has its own Team Sonic, lead by Knuckles the Echidna, who has protected it from the dastardly plans of Dr. Eggman. During a badnik attack on the island where Eggman used his Octopus Bot to counter Team Sonic, Knuckles arrived and defeated Eggman. However, after recoiling from Knuckles' attack, Octopus Bot accidentally sent Knuckles to the Sonic Boom World. Fortunately, Knuckles returned to Bygone Island in time help Sonic when he was corned by Crab Bots/