Greg Baldwin is an American voice actor. He is best known for inheriting numerous voice roles originated by Japanese-American actor
Mako following his death in 2006, including Aku from the fifth season of
Samurai Jack (2001) and the video game Cartoon Network Universe: FusionFall, Iroh in the third season of
Avatar: The Last Airbender (2005) (a role he later reprised in its sequel series
The Legend of Korra (2012)), and Master Splinter in
TMNT (2007). Baldwin also made guest appearances on
SpongeBob SquarePants (1999) The Marvelous Misadventures of Flapjack (2008), and
Star Wars: The Clone Wars (2008).