 Tom McGrathSkipper (voice) | Skipper (voice) |
 Chris MillerKowalski (voice) | Kowalski (voice) |
 Christopher KnightsPrivate (voice) | Private (voice) |
 Conrad VernonRico (voice) | Rico (voice) |
 John MalkovichDave (voice) | Dave (voice) |
 Benedict CumberbatchClassified (voice) | Classified (voice) |
 Ken JeongShort Fuse (voice) | Short Fuse (voice) |
 Annet MahendruEva (voice) | Eva (voice) |
 Peter StormareCorporal (voice) | Corporal (voice) |
 Andy RichterMort (voice) | Mort (voice) |
 Danny JacobsKing Julien (voice) | King Julien (voice) |
 Werner HerzogDocumentary Filmmaker (voice) | Documentary Filmmaker (voice) |
 Sean CharmatzCricket (voice) | Cricket (voice) |
 Billy EichnerNew York Reporter (voice) | New York Reporter (voice) |
 Stephen KearinPilot / Aquarium Employee (voice) | Pilot / Aquarium Employee (voice) |
 Ava AcresGirl at Zoo (voice) | Girl at Zoo (voice) |
 Kelly Cooney CilellaMermaid Penguin (voice) | Mermaid Penguin (voice) |
 Susan FitzerAntarctic Penguin (voice) | Antarctic Penguin (voice) |
 Chris SandersAntarctic Penguin (voice) | Antarctic Penguin (voice) |
 Emily NordwindAntarctic Penguin (voice) | Antarctic Penguin (voice) |
 Mike MitchellAntarctic Penguin (voice) | Antarctic Penguin (voice) |
 Hope LevyAntarctic Penguin / Woman at Aquarium (voice) | Antarctic Penguin / Woman at Aquarium (voice) |
 Walt DohrnAntarctic Penguin (voice) | Antarctic Penguin (voice) |
 Jim PirriGondolier (voice) | Gondolier (voice) |
 Elizabeth PanShanghai TV Reporter (voice) | Shanghai TV Reporter (voice) |
 Jeff FischerSecurity System Voice (voice) | Security System Voice (voice) |
 Stephen ApostolinaPenguin Prisoner (voice) | Penguin Prisoner (voice) |
 Al RodrigoPenguin Fan (voice) | Penguin Fan (voice) |
 Steve AltermanAquarium Announcer (voice) | Aquarium Announcer (voice) |
| CCarter HastingsBoy at Aquarium (voice) | Boy at Aquarium (voice) |
