Episode Title:
Dr. Eggman Joins the War!.
Episode Description:
During the brief period of planet Hydo's people thanking Sonic and his friends for defeating the Metarex, Eggman tricks Knuckles and tries to obtain the Chaos Emerald. However, a frog-shaped Metarex appears and swallows it. The group must prevent the Metarex from stealing the Planet Egg again.
