Teru Mikami is an individual with a strong sense of justice and devotion towards Kira. He refers to Light as Kami, which translates to God in Japanese. Despite his dedication to helping Kira, he's willing to make personal sacrifices for her cause. As a lawyer, Mikami has faced bullying due to standing up against what was right during his school years. He excelled academically and later became a prosecuting agent to ensure that criminals received their deserved punishment. Mikami is an independent person who consistently maintains a rigorous workout routine, even on New Year's Day. His punctuality and intelligence make him a talented individual with a "Kira-like" behavior pattern.
In the anime, he kills himself after failing to kill the remaining members of the SPK and the Japanese Task Force.