Light Yagami, the main character in the anime "Death Note," manipulates his allies by using his intelligence, charisma, and the power of the Death Note itself. He often plays on their emotions and vulnerabilities to gain their trust and loyalty. By appearing as a trustworthy and righteous figure, he convinces his allies to support his goal of creating a new world order where he is the ultimate authority. Additionally, he strategically uses the Death Note to eliminate anyone who poses a threat to his plans or disagrees with his methods, further solidifying his control over his allies.