Lou Drumm

Makoto Iwamatsu (岩松 信, Iwamatsu Makoto), professionally known as Mako Iwamatsu or just Mako, was a Japanese-American actor and voice talent. He is best known for roles in the Arnold Schwarzenegger Conan movies, Highlander III, and the Jackie Chan film Big Brawl, as well as the voice of chief villain 'Aku' in the cartoon Samurai Jack.

Director Kevin Munroe announced on July 20, 2006 that Mako was voicing Splinter in the then-upcoming film, TMNT. Sadly, the very next day, Mako passed away at the age of 72. All of Mako's lines for the film had been finished, and any ADR cleanup was finished by his Samurai Jack co-star, Phil LaMarr.