Jessie T. Usher

as Quinn (voice)

J.K. Simmons

as Claggart (voice)

Matthew Rhys

as Grimes (voice)

Kristen Schaal

as Beth (voice)

Patrick Warburton

as Geraldo (voice)

Sharlto Copley

as Switch (voice)

Camille Mana

as Jing (voice)

John Kani

as Brick (voice)

Dolph Lundgren

as Dolph (voice)

Seal

as Seal Seal (voice)

Bumper Robinson

as HMMF Animal Handler / Chum (voice)

Julian Alexander Smith

as Benji (voice)

Rick Zieff

as Crunch (voice)

Richard Steven Horvitz

as Snap (voice)

Vivienne Rutherford

as Sam (voice)

Anjali Bhimani

as Crabby Stabby / Seals / Sharks (voice)

Jan Johns

as Mayday / Geraldo's Watch / Seals / Sharks / Octopi (voice)

Kate Micucci

as Diving Dee (voice)

Daran Norris

as Roger / Radio DJ (voice)

Matthew Mercer

as Dave / Sharks (voice)

Jenny Yokobori

as Geraldo's Watch / Seals / Octopi (voice)

Secunda Wood

as Scarlet (voice)

Julia Anastasopoulos

as Tour Guide (voice)

Greig Cameron

as Harbor Seals / Seals / Sharks (voice)

Rob van Vuuren

as Harbor Seals (voice)

Louw Venter

as Harbor Seals (voice)

Tarryn Wyngaard

as Harbor Seals (voice)

Jody J. Abrahams

as Guards (voice)

Zolani Mahola

as Guards (voice)

Bob Bergen

as Seals / Octopi / Dolphin Sounds (voice)

Jason E. Kelley

as Seals (voice)

Catherine Taber

as Seals (voice)

Rodger Bumpass

as Sharks (voice)

Bill Farmer

as Seals (voice)

Neil Leachman

as Seals / Sharks (voice)

Brendan Sean Murray

as Seals / Sharks (voice)

Remy Edgerly

as Seals (voice)

Joe Ochman

as Seals (voice)

Genevieve Flati

as Seals (voice)

Matthew Wood

as Seals / Sharks (voice)

Kristina Mueller

as Sharks (voice)

Brent Mukai

as Sharks (voice)

Sarah Natochenny

as Sharks (voice)

Quinton Flynn

as Sharks (voice)

Ryan Robinson

as Sharks (voice)

Lindsay Sheppard

as Sharks (voice)