Sonic the Hedgehog 4: Episode II
The Sonic 4 saga continues in Episode II with the return of a beloved sidekick and popular villain! After the events of Episode I, Metal Sonic has returned to team up with Dr. Eggman! To face this new villain, Sonic must call on an old friend to help him save the day!
Story
After the events of Episode I, Little Planet returns and Dr. Eggman finds Metal Sonic and repairs him.[17] Sonic learns that Eggman is back and meets up with Tails to stop him. Meanwhile, Metal Sonic searches for the heroes and sees them flying away with the tornado and follows them with Tails' rocket.