When a boastful naval Captain arrives in Marineville to demonstrate a new missile, he and Troy immediately experience a clash of personalities. Meanwhile, Surface Agent X-Zero sabotages the test missile by loading it with real explosives.
| 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 / Sub-Lieutenant John Horatio Fisher / King Titan (voice) | Commander Sam Shore / Sub-Lieutenant John Horatio Fisher / King Titan (voice) |
 Lois MaxwellLieutenant Atlanta Shore (voice) | Lieutenant Atlanta Shore (voice) |
 David GrahamCaptain Jacques Jordan / Aquaphibian 1 / Aquaphibian 2 (voice) | Captain Jacques Jordan / Aquaphibian 1 / Aquaphibian 2 (voice) |