The Sol Zone is the home universe of Blaze the Cat and Marine the Raccoon. Unlike Mobius Prime, the Sol Zone had Sol Emeralds instead of Chaos Emeralds. This zone was first encountered by Sonic the Hedgehog and Miles "Tails" Prower when their plane crashed and they mysteriously arrived on Seagull Island. Marine had gotten possession of the green Chaos Emerald, though it was stolen shortly afterwards by Johnny. Following this, Sonic, Tails, Marine and Blaze fought against Johnny, Captain Whiskers and Dr. Nega, defeating them and retrieving the Chaos Emerald.
Shadow the Hedgehog accidentally ended up in the Sol Zone after using Chaos Control to teleport himself and Metal Sonic away from the battle taking place in Moebius. Shadow was rescued by Marine and Blaze and brought on board the former's ship, the Ocean Tornado. Following this, the three fought against Metal Sonic and destroyed him, and Shadow was given the green Chaos Emerald to help him return back to Mobius Prime.
Blaze the Cat
Marine the Raccoon
The Jeweled Specter