"Six is a Crowd" is the twenty-fourth episode of the Sonic Underground television series. It first aired on 28 March 1999 in France and on 30 September 1999 in the United States. It was included in Volume 2 and Legend Has It.
The song performed in this episode is "I Can Do That For You."
The Sonic Underground gang get a visit from the Oracle of Delphius to visit another dimension. They soon arrive and find themselves treated with a lot of respect.
The Freedom Fighters of this dimension capture Sonia, Manic, and Sonic and take them to their leader, Robotnik. Robotnik explains how Manic took away their money, Sonia took away their freedom, and Sonic took away their music as he shows our heroes a video of Their Royal Selves.
Our heroes show The Freedom Fighters and Robotnik that they're not cruel by singing a song. The Freedom Fighters, along with Sonic, Manic, and Sonia, sneak into the palace, fire the guards, and see their doppelgangers criticizing food, counting money, and sending servants to the dungeon.
They confront their lookalikes and take them on a trip to see what they've done. The doppelgangers change their laws and the gang leave the world. Sonia hears their mother's voice and a vision of Queen Aleena says she is happy for what they have done. The apparition vanishes while Sonia cries. Her brothers console her and their journey for their mother continues.
- Sleet and Dingo do not appear in this episode.
- This is one of the only two episodes where Aleena's narration is not heard in the beginning of an episode.
- The Vacuum would have likely sucked up Evil Manic when he tried to save the money.