Daisuke Matoba is a character who appears in the film and novelization of L: Change the WorLd, a spin‑off set within the Death Note live‑action continuity. He is introduced as the director of the non‑profit organization Blue Ship, which publicly presents itself as an environmental group but secretly operates as a bio‑terrorist cell. Matoba’s primary motivation for leading Blue Ship is personal profit rather than any deep ideological commitment to the group’s stated goal of reducing the human population; he is depicted as being in the scheme primarily for the money. His role in the story is that of a secondary antagonist who coordinates the plot to obtain and weaponize a deadly virus, working alongside Dr. Kimiko Kujo, a scientist who developed the virus and who ultimately becomes the more active and ruthless leader of the operation. Matoba is supported by several associates, including Tamotsu Yoshizawa and Asao Konishi, who carry out his orders. In terms of personality, he is pragmatic, self‑interested, and willing to use extreme measures to secure the virus or its antidote, but he does not display the same fanaticism or intelligence as Kujo. Throughout the narrative, Matoba remains a relatively static figure; he does not undergo significant personal development and serves mainly as an obstacle that L must overcome in the final days of his life. He is ultimately arrested when L foils the group’s plan to release the virus. Matoba possesses no extraordinary abilities; his influence comes from his position as the head of Blue Ship and his access to financial and logistical resources.