Korra
Janet Varney
Mako (voice)
David Faustino
Bolin
P.J. Byrne
Suyin Beifong
Anne Heche
Tenzin (voice)
J.K. Simmons
Bolin (voice)
P. J. Byrne
Zaheer
Henry Rollins
Asami Sato
Seychelle Gabriel
Amon/Red Lotus Guard No. 1
Steve Blum
Shiro Shinobi/Radio Broadcaster
Jeff Bennett
Lieutenant (voice)
Lance Henriksen
Naga/Pabu/Bum-Ju/Oogi/Poki
Dee Bradley Baker
Lin Beifong (voice)
Mindy Sterling
Pema/Reporter No. 3
Maria Bamford
Varrick
John Michael Higgins
Aiwei/Chef
Maurice LaMarche
Desna
Aaron Himelstein
Jinora (voice)
Kiernan Shipka
Hiroshi Sato (voice)
Daniel Dae Kim
Ikki (voice)
Darcy Rose Byrnes
Toph Beifong
Kate Higgins
Eska
Aubrey Plaza
Kya
Lisa Edelstein
Meelo (voice)
Logan Wells
Katara
Eva Marie Saint
Tonraq
James Remar
Bumi
Richard Riehle
Uncle Iroh/Looter
Greg Baldwin
Young Suyin
Jessie Flower
Ganbat
Travis Willingham
Dai Li Sergeant/Rich Man
Gary Cole
Saikhan (voice) / Two Toed Ping (voice)
Richard Epcar
Innkeeper
Andrea Romano
Lord Zuko
Bruce Davison
President Raiko
Spencer Garrett
Opal
Alyson Stoner
Tu/Cousin
Greg Cipes
Ryu
Jon Heder
Muscly Man
Matthew Willig
Referee (voice) / Referee / Additional Voices (voice)
Tom Kenny
Chow/Train Guard/Earth Kingdom Guard/Uncle
Carlos Alazraqui
Daw/Reporter No. 1/Guard
Jim Meskimen
Captain/Dai Li Agent
Keythe Farley
Kuvira (voice)
Zelda Williams
Acupuncturist
Paul Nakauchi
Arik
David Kaufman
Ghazan
Peter Giles
Unalaq
Adrian LaTourelle
Kai (voice)
Skyler Brigmann
Fruithog/Reporter No. 2/Daw's Brother
Chris Hill
Hong Li
Joey Richter
Mayor
Michael Donovan
Kong
Gregg Binkley
Yin
Susan Silo
Wing/Wei
Marcus Toji
Vaatu
Jonathan Adams
P'Li
Kristy Wu
Huan/Guy No. 1
Jason Marsden
Leader/Guard No. 2/Guy in Crowd
Jason Miller
Queen Hou-Ting/Aunt
Jayne Taini
Gombo
Pat Fraley
Tahno (voice)
Rami Malek
Kuon's Daughter
Ashley Boettcher
Gun/Conductor/Waiter
Mitchell Whitfield
Ming-Hua/Kuon's Wife
Grey DeLisle-Griffin
White Lotus Guard No. 2
Sunil Malhotra