Testujin 28-go (2005) by Robo Creation, Vstone, and Robo-Garage. Tetsujin 28-gō (鉄人28号 or "Iron Man No. 28") is a 1956 manga by Mitsuteru Yokoyama about the adventures of Shotaro Kaneda, who controls a giant robot named Tetsujin 28.
"In response to my proposal to create Tetsujin as an actual robot, President Yamato of Vstone, who accepted the role of publisher and project leader, said, "If we can get the consent of the copyright holder, let's try." Yes, robots are produced in small quantities, and there is no relationship with the copyright holder, and the rights to famous characters are often held by major clients, so it is difficult to imagine that it will be easy to obtain the consent of the copyright holder. I was in a situation. I immediately created a project proposal and entered into negotiations with the copyright owner in a situation that was more like a face-to-face encounter than a proposal. After several exchanges, the copyright owner said, "It is difficult to conclude a new contract for such a small project." Those words made me freeze up in an instant. However, after that, "the live-action version of Tetsujin 28-go will be shown next year. Would you like to tie up with us for that promotion?" It sounds like a dream. The project, which simply wanted to turn Iron Man into an actual robot, was praised as an interesting way to create a buzz for the movie. From my point of view, on the contrary, this movie exists to promote robots. However, there was one "absolute condition" that had to be carried out. Iron Man's appearance has to look like what is shown in the movie. My dream was not to be the original Ironman, but to be a "modernized Ironman." If you accept this "absolute condition", you will have the best environment for planning. Of course, I readily agreed, and we were able to commercialize the idea." – Susumu Kanei, anime version Tetsujin, Robo Creation.