Takeshi Todo (藤堂 武史 Todō Takeshi) is one of main antagonists of Denkou Choujin Gridman. He is a classmate of Gridman's human host, Naoto Sho. He is sought out by the evil Khan Digifier to create computerized kaiju that they use to attack the human world.
Takeshi is an introverted and bitter soul as a result of being neglected by his parents and in a lesser extent, by his friends. Because of his mistreatment, and his difficulty with socially interacting with others, Takeshi can be easily swayed by Khan Digifer's suggestions. He is able to hold grudges even for trivial issues, and in several instances created a kaiju program to enact revenge against someone who offended him while he was walking home from school.
In the end, he was able to find closure over his sad background after he was saved by Ippei after Khan unleashed a full assault on the Human World.
In Denkou Choujin Gridman: boys invent great hero, Takeshi is implied to have become a much better person than he used to be, wholeheartedly accepted Gridman Sigma's proposal to become host and partner to face other threats.
Takeshi is skillful in computer engineering, as he able to hack others' electronics with devastating results. He is able to craft kaiju programs for Khan Digifer to use to attack electronic systems through Computer World.