
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.

The time travel mission fails and puts the Great Forest at risk.

After a disastrous mission, Sonic regrets that they can't go back and prevent Robotnik's takeover.

When Sonic loses his memory, Snively takes advantage and gets the hedgehog to infiltrate Knothole.

Sonic and Sally meet a new ally, but Sally doesn't trust him.

The Freedom Fighters, with new addition Dulcy, develop a Derobotisizer.

Sonic takes Tails with him to the Big City.

A baby Terra-Pod has strayed from its herd.

Robotnik sends explosive snake probes to drill in search of oil.

The time travel mission fails and puts the Great Forest at risk.

After a disastrous mission, Sonic regrets that they can't go back and prevent Robotnik's take-over.

When Sonic loses his memory, Snively takes advantage and gets the hedgehog to infiltrate Knothole.

When S and G rocket to outer space, Sonic and Tails stow away.

Within the Void, Sonic and Nicole encounter a mysterious wizard named Naugus.

Robotnik orders Scratch and Grounder to drill for a rare mineral in a tropical mountain.

Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.

Sleet and Dingo plan to collect the taxes owed to Robotnik but keep it for themselves.

Sonia discovers that the watch she received from her friend is actually a monitoring device.

A homecoming is interrupted for Sonic, Sonia and Manic when Sleet and Dingo arrive to collect taxes.

A captain of the Queen's guard is captured before he can reach the secret rendezvous.