Following the escape of his slave Marina, Titan plots revenge by planning to kill the Stingray crew with a deadly plant that gives off toxic fumes.
| Actor | Role |
|---|---|
 Don MasonCaptain Troy Tempest (voice) | Captain Troy Tempest (voice) |
 Robert EastonLieutenant George Lee 'Phones' Sheridan / Surface Agent X-2-Zero (voice) | Lieutenant George Lee 'Phones' Sheridan / Surface Agent X-2-Zero (voice) |
 Ray BarrettCommander Sam Shore / King Titan (voice) | Commander Sam Shore / King Titan (voice) |
 Lois MaxwellLieutenant Atlanta Shore (voice) | Lieutenant Atlanta Shore (voice) |
 David GrahamAquaphibian (voice) | Aquaphibian (voice) |