<P> Ohba describes Matsuda as a "very simple guy" easily used in the story . Some fellow task force members even refer to him as an idiot, including L and Light . Matsuda is very useful as a character because he acts only on his emotions, which according to Ohba is "probably" why he survives . Despite working to capture Kira, Matsuda admits that he is not entirely sure whether or not the death of criminals is such a bad thing, though he does not let it get in the way of his work; even in the epilogue of the manga he still struggles with determining whether or not he did the right thing in siding with Near . This trait was given to him because Ohba felt that any group would have at least one individual who supports Kira to help balance it . Obata described Matsuda as "hard to predict and thus hard to draw ." Obata felt that Matsuda's character concept consisted of an "average young detective", and that because Matsuda's character was not unique and his actions were not consistent, something Obata sees in himself, he did not like the character or how it pointed out his "own inconsistency ." Obata described Matsuda as the sole character who "looks younger" during the Near and Mello arc . His birthday is December 14, 1978 . </P> <P> Shuichi Aizawa (相沢 周 市, Aizawa Shūichi) is a member of the Kira investigation team that leaves the team under the guise of needing to support his family because the Japanese police cut their funding (it is only after he leaves that it is revealed that L would have supported them had he stayed). Aizawa uses the alias Aihara (相原) to protect his identity . Aizawa returns after L's death, where he is one of the first to suspect Light of being Kira (although he continues to act compassionately towards Light until he is cornered, and goes mad), and helps contribute to his eventual defeat . He becomes the leader of the investigation team afterwards . Ohba decided to make Aizawa the chief of the NPA because he did not want to create a new character in the final chapter, and because he felt that Aizawa is the best candidate because of his connections to the police and Near . His birthday is May 11, 1969 . He is voiced by Keiji Fujiwara in the Japanese anime and Trevor Devall in the English dub . In the film, he is played by Tatsuhito Okuda.In the drama series, he is portrayed by Tomohisa Yuge . </P> <P> 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 . Despite this, perhaps even because of this, he is a particularly good detective . 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 . He appears to be fond of Misa, as is seen when he worries that Misa's comments about Takada could get her killed . The feeling is probably mutual, since Misa is happy to have him stay with her, and nicknames him' Motchi' . 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 second film (in which he is played by Shin Shimizu), he is killed by Misa in her first Sakura TV broadcast (in the manga and anime, it is Ukita who is killed at this point). In the drama series he is portrayed by Jirō Satō . </P> <P> 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 too close to Near, so Ohba chose Aizawa to be the new NPA chief . His birthday is September 13, 1973 . </P>

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