Takeshi Hirokawa (広川 剛志, lit. Hirokawa Takeshi) was the leader of a cabal of Parasites which counts Reiko and Gotou among its members. He was the Mayor of East Fukuyama City, and a human who sympathized with the Parasites.
Appearance
Hirokawa was a well-kept man with short hair that was neatly combed back and an average height and build. In the anime he had brown hair and eyes, while in the manga they were black. He was almost always seen in a formal suit and tie.
Personality
Hirokawa was a level-headed man, his demeanor usually calm and without expression. This made people mistake him as a parasite. He believed that humans are toxic, and greatly disapproved of how the human race treats the planet and all the other species around them. Being sympathetic with parasites, he truly believed they were the answer to cleansing the planet of humans and assumed his own species as trash.
He is also attentive to the parasites allied with him, asking about Reiko's infant, mediating between them and keeping tabs on the news when they can no longer be contacted.
Similar to the parasites, he displays little expression; the only emotion he strongly shows is rage during his final speech.