The evil doctor from the My Hero Academia universe- Dr. Kyudai Garaki otherwise known as Daruma Ujiko, has been notoriously responsible for the creation of Nomus and other monstrosities. A devoted member of the League of Villains, Dr. Garaki has been instrumental in All for One's and Tomura's survival and enhancement. His work and expertise in genetics and bio-engineering is the reason why Nomus exists, and his dark research is why they are so strong due to quirk duplication. Dr. Garaki is also responsible for replicating and creating the quirk-destroying bullets which have adverse effects resulting in the erasure of a quirk.