His first appearance in the Anime came during the First Limitless Fortress Story Arc, where he welcomed Ban and Shido with an army of wire-doll soldiers controlled by MakubeX. He easily overpowered Ban with his physical prowess and unique skill known as "Enlightenment", and would have faced off against Ban and Shido if Haruki Emishi didn't intervene, although this was part of MakubeX's plans. Later on, he would fight Ban Midou in a 1-on-1 battle in a Virtual Coliseum. In the end, Fudou saw a vision of Ban's death and prepared to finish him, however, Ban completely destroyed his Mechanical Arm and internally damaged Fudou's body in the process, supposedly ending his life.