Knives, Millions

ミリオンズ・ナイブズ

Millions Knives serves as the primary antagonist in the Trigun series.
He is one of the rare fully sentient Plants and the older twin brother of Vash. Both were born during a mission aimed at advancing the human race, raised aboard a settler spaceship alongside Vash, and cared for by Rem until Knives disrupted the ships' trajectory, causing them to crash to prevent humans from colonizing their new home planet. While Vash holds that all beings possess the potential for good and deserve to live, Knives adheres to the principle of survival of the fittest. After uncovering experiments conducted on another sentient Plant, he concludes that humans are evil and grotesque, and that they must be eradicated. Vash disagrees with these plans and attempts to stop him, while Knives tries to dissuade Vash from building his life around the "idealistic nonsense" preached by Rem. He fails to persuade Vash to join his cause.
As the story of Trigun progresses, it becomes clear that Knives views humans as parasites requiring extermination. He desires to establish a peaceful and fair world with Vash and his other Plant kin, believing that the only method to achieve this is by killing all humans. Knives never claims to be a God; he considers himself merely a being superior to homosapiens. If Knives were to succeed in killing all humans and begin creating his "Eden" on Gunsmoke, it is very likely that he would behave similarly to Vash, acting as a kind and loving individual.