Who voiced Iroh after Mako in the original animated series?

Greg Baldwin voiced Iroh after Mako in the original animated series.

Mako Iwamatsu voiced Uncle Iroh through the first two seasons of Avatar: The Last Airbender. Mako died in 2006 after production on much of Book Two had been completed, and Greg Baldwin subsequently took over the role for Book Three: Fire.

The transition was not entirely abrupt. Baldwin supplied brief pieces of Iroh dialogue in parts of the second season when Mako was unavailable to record, and some episodes combine Baldwin's replacement lines with material Mako had already performed. Baldwin then voiced Iroh full-time in the final season.

Baldwin's performance continued in The Legend of Korra, where Iroh appears in the Spirit World. He was known for his ability to evoke Mako's vocal style, but he also established his own interpretation of the character. Viewers sometimes confuse Baldwin with actors associated with other major roles: Mark Hamill voiced Fire Lord Ozai, Victor Brandt voiced Master Pakku, and Robert Patrick was not Iroh's replacement.