As Flint, Mutt, and Shipwreck return to Joe Headquarters, the Joes and Cobras head to the Island of No Return and the jungle Palace of Doom to retrieve parts of the weather dominator.
| Name | Type | Role | |
|---|---|---|---|
| Rob Paulsen | Guest Star | ||
| Bill Ratner | Guest Star | ||
| Gregg Berger | Guest Star | ||
| Michael Bell | Guest Star | ||
| Neil Ross | Guest Star | ||
| Zack Hoffman | Guest Star | ||
| Bill Morey | Guest Star | ||
| Kene Holliday | Guest Star | ||
| B.J. Ward | Guest Star | ||
| Sally Julian | Guest Star | ||
| Michael Yama | Guest Star | ||
| Christopher Collins | Guest Star | ||
| Keone Young | Guest Star | ||
| Micha | Guest Star | ||
| Mary McDonald-Lewis | Guest Star | ||
| Frank Welker | Guest Star |