Sonic Underground
Sonic, Manic and Sonia find an abandoned baby in an alley and begin to look for the baby's parents.
Sonic, Manic and Sonia find an abandoned baby in an alley and begin to look for the baby's parents.
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The Freedom Fighters find themselves defending an underground city of Mobian refugees.
Sonic is paralyzed by a recurring nightmare.
Robotnik announces his intention to give up villainy, and Sonic is forced into retirement.
When a Rebel Base is threatened by Robotnik, Sonic and Tails team up with Big Mike and Da Bears.
When S and G rocket to outer space, Sonic and Tails stow away.
Robotnik escapes from the asylum to wreak revenge on Sonic; she locks him in her torture chamber.
Robotnik captures a kangaroo and brainwashes him into a resourceful demolitions expert.
Robotnik invents a contraption that makes Scratch and Grounder twice as fast as Sonic.
Dr. Robotnik builds a robot son, but the robot realizes he would rather be on Sonic's side.
Robotnik invents a device that turns Sonic and Tails into babies.
Robotnik creates a machine capable of turning dreams into reality.
Robotnik is after the Power Gems from the city of Suburbia in the Labyrinth Zone.
The Hedgehogs discover that Sonia has inherited a castle; She basks in the idea of having a castle.
Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.
Robotnik organizes a track meet to lure Sonic into a trap.
Sonia is invited to a debutante ball, but she and her brothers must go on a mission first.
Freedom Fighters are obliterated by a swarm of metallic fly-bots; Manic looks for the insects.
A homecoming is interrupted for Sonic, Sonia and Manic when Sleet and Dingo arrive to collect taxes.
Sonia discovers that the watch she received from her friend is actually a monitoring device.
A captain of the Queen's guard is captured before he can reach the secret rendezvous.
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