Dr. Kyudai Garaki, operating under the villain alias Daruma Ujiko, serves as a pivotal antagonist with a decades-spanning history. Originally a Quirk researcher, he introduced the Quirk Singularity Theory roughly seventy years prior to the main storyline, forecasting the uncontrollable evolution of Quirks. Scientific rejection led to his discreditation. All For One, convinced by the theory, became his patron and friend. In gratitude, Garaki bestowed his original "Life Force" Quirk—extending lifespan and preserving youth—upon All For One, retaining a duplicate for himself. This alliance cemented Garaki's lifelong loyalty and dedication to All For One's objectives. Publicly, Garaki founded and chaired Jaku General Hospital, championing community Quirk research while establishing orphanages and nursing homes. This philanthropic front earned him widespread respect, effectively masking clandestine operations. Secretly, he exploited the hospital's morgue and concealed laboratories for unethical experiments, abducting corpses and living subjects to forge Nomu. This network provided diverse Quirks and test subjects, with the hospital acting as cover. Garaki's scientific prowess revolutionized villain enterprises. He mastered Quirk duplication and transplantation, creating Nomu—biologically engineered beings implanted with multiple Quirks—whom he viewed as "children" or "masterpieces." His creations included High-End Nomu like Kurogiri (reanimated from Oboro Shirakumo's corpse) and utility Nomu such as Johnny and Mocha. He reverse-engineered Quirk-Destroying Bullets by analyzing Eri's Rewind Quirk Factor, stripping their restorative properties to produce bullets that permanently erase Quirks. He also duplicated the All For One Quirk for Tomura Shigaraki and Nine, modifying Tomura's body to endure its power. His involvement touched key figures: diagnosing Izuku Midoriya as Quirkless in childhood, treating Toya Todoroki (Dabi) after Sekoto Peak (noting Toya's survival was hatred-fueled), and preserving the severed hands of Tenko Shimura's family—later returned to reinforce Tomura's trauma. Initially skeptical of Tomura as All For One's successor, Garaki demanded proof of worthiness, culminating in Tomura's victory over the Meta Liberation Army. This secured Garaki's backing, enabling Tomura's four-month metamorphosis into a vessel exceeding All For One's power. Garaki displayed a multifaceted personality: eccentric, prideful regarding his creations, and profoundly loyal to All For One, tearfully expressing decades-long gratitude. He genuinely mourned fallen Nomu and apologized to prematurely released High-Ends. Yet, he reacted cowardly under direct threat, panicking during the Jaku Hospital raid. His public persona remained benign and devoted, starkly contrasting his hidden villainy. During the Paranormal Liberation War, heroes raided Jaku Hospital upon linking Garaki to Nomu production. Mirko destroyed his lab and killed Johnny and Mocha, though a Twice-duplicated Nomu initially shielded him. He was ultimately captured, but not before facilitating Tomura's power transfer and stockpiling resources like Nomu and Quirk-Destroying Bullets for ongoing villain operations. *A note on nomenclature: The alias "Maruta Shiga," briefly used in the manga and referencing historical war crimes, was retracted by the creator. The name was changed in subsequent releases to avoid unintended associations.*