After rescuing two stranded aquanauts, Troy finds a load of jewels and becomes a rich, selfish snob. He turns his back on the WASPs and builds a palace on the ocean floor where he bosses his friends around.
| 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 / Joe (voice) | Commander Sam Shore / Joe (voice) |
 Lois MaxwellLieutenant Atlanta Shore (voice) | Lieutenant Atlanta Shore (voice) |
 David GrahamFrank (voice) | Frank (voice) |
 Sylvia AndersonMarina (voice) | Marina (voice) |
 Gary MillerCaptain Troy Tempest (singing voice) | Captain Troy Tempest (singing voice) |