Sonic Underground: Secrets of the Chaos Emerald
- Anno: 2008
- Nazione: France
- Genere: Azione, Avventura, Animazione
- Studio: NCircle Entertainment, DiC Entertainment
- Parola chiave: rebellion, dystopia, musical, robot as menace, triplet, based on video game, hedgehog, animal protagonist, band
- Direttore: François Hemmen, Marc Boreal, Daniel Sarrie
- Cast: Jaleel White, Brian Drummond, Garry Chalk, Gail Webster, Peter Wilds, Maurice LaMarche