Kanzo Mogi (模木 完造, Mogi Kanzō) is one of the most dedicated members of the Kira investigation team, but also one of the most reserved. Mogi rarely speaks, even when someone presents an opinion he agrees with. He is shown to be an excellent actor, becoming an excited and cheery manager for Misa on demand and in seeming contradiction to his usual demeanor. Mogi uses the alias Kanichi Moji (模地 幹一, Moji Kan'ichi) to protect his identity. He is voiced by Kazuya Nakai in the Japanese anime and John Murphy in the English dub. In the film, he is played by Kuji Nakamura, and is killed by Misa in her first Sakura TV broadcast (in the manga and anime, it is Ukita who is killed at this point).
Mogi was originally introduced to "fill the cast", though Ohba later planned to use Mogi for "something really amazing" and "surprising" since Mogi is a "silent type." Obata also did not think of Mogi as important, so Mogi's design was not very clear. While trying to decide who would become the new NPA chief at the end of the series, Ohba felt that Mogi would be inclined to stick with Near. His birthday is September 13, 1973 (1976 in the anime).