Grey DeLisle
Erin Grey Van Oosbree, credited as Grey DeLisle and Grey Griffin, is an American voice actress and singer-songwriter. My favorite villan all time and she is just a great voice actor
Mako
He's an absolute legend. His acting is totally unrivaled in the series, even with some VA big shots and veterans like DeLisle. He brings so much depth to the character (granted, the writing is also responsible), and also some of the series' best comedy.
I believe the full name is Mako Iwamatsu. Who knew the guy that voiced the flamboyant evil that is Aku from Samurai Jack could voice someone as benevolent and wise as Iroh?
They dedicated an episode to him in the part The Tale of Iroh just after he sings Leaves From the Vine.
Dante Basco
His voice is amazing. He did a great job on Zuko.
Mae Whitman
Mae Margaret Whitman is an American actress and singer. After making her film debut as the daughter of Meg Ryan's character in When a Man Loves a Woman, she appeared as the daughter of George Clooney's character in One Fine Day, and was then cast as the President's daughter in Independence Day.
Jack DeSena
Jessie Flower
Known for voicing Toph Beifong.
Zach Tyler Eisen
Mark Hamill
Mark Richard Hamill is an American actor and voice actor. He is best known for his portrayal of Luke Skywalker in the original Star Wars trilogy – Star Wars, The Empire Strikes Back, and Return of the Jedi and his portrayal of the Joker in Batman: the Animated Series. How is he number 9?, He played the joker from batman and Luke Skywalker in Star Wars!
Jason Isaacs
Kevin Michael Richardson
Kevin Michael Richardson is an American actor and voice actor who has portrayed a multitude of characters in various animated series and video games. He is known for his extremely deep voice and has been playing a wide variety of characters since the early 1990s, often villains. For voicing Joker in... read more
The Newcomers
? Wirley Contaifer
? Cricket Leigh
The Contenders
Jennie Kwan
James Sie
Known for voicing the cabbage merchant, one of the most iconic yet underrated characters of all time.
George Takei
Olivia Hack
Mako Iwamatsu
He's on this list two times, which would place him on number two.