Sonic Underground

Manic babysits an abandoned baby hedgehog, which turns out to be a Robotnik spy sent to find Sanctuary.

A jewel that glows near Queen Aleena could lead the siblings to her, or into a trap.

The Oracle strips the siblings of their medallions and sends them to a Roman world ruled by a Sleet look-alike.

Bartleby plans a resort on sacred Speedster Island, and the medallions wake its stone guardians.

On the Floating Island, Sleet and Dingo trick Knuckles into fighting the hedgehogs while they go for the Chaos Emerald.

Robotnik brews a potion that gives anyone Sonic’s speed, with some very big side effects.

Robotnik’s robot bugs turn Freedom Fighters into his slaves, and Manic is stung.

Robotnik auctions “artifacts” from a lost city, and the siblings discover they are actually bombs.

Sonia inherits a spooky castle, and the siblings come closer than ever to their mother.

Robotnik stages a race for Mobius’s fastest athletes as a trap for Sonic, and catches the wrong hedgehogs.