The citizens of Waterfall City flee for the tenuous safety of Earthfarm, abandoning their city to the dangerous Outsiders - who discover the key to Dinotopias future and threaten its survival.
| Actor | Role |
|---|---|
 Wentworth MillerDavid Scott | David Scott |
 Len GoodmanZippo | Zippo |
| AAdam WhisnerAnnouncer | Announcer |
 Katie CarrMarion | Marion |
 Jim CarterMayor Waldo | Mayor Waldo |
 Alice KrigeRosemary | Rosemary |
 Tyron LeitsoKarl Scott | Karl Scott |
 Anna MaguireSamantha Waldo | Samantha Waldo |
 Colin SalmonOonu | Oonu |
 David ThewlisCyrus | Cyrus |
 Hannah YellandRomana Denison | Romana Denison |