While Fukuzawa is emotionally reserved and impassive, he can display a scathing sense of humor Fukuzawa is, as expected from the president of the Agency, a serious man, capable of maintaining his calm expression at every time, even in front of an adversary. Ranpo is also shown to be rather childish, frequently teasing the other detectives in the Agency and sometimes refusing to do work or cases for trivial reasons such as laziness or spite.