Light Yagami's god complex plays a significant role in shaping his interactions with other characters throughout the series "Death Note." His belief that he is a god-like figure with the power to decide who lives and who dies leads him to exhibit manipulative and controlling behavior towards those around him. He becomes increasingly detached from his former morals and values, viewing himself as superior to others and justifying his actions as necessary for the greater good. This mindset creates a sense of arrogance and entitlement in Light, causing him to view those who oppose him as obstacles to be eliminated rather than as equals to be reasoned with. As a result, his relationships with other characters become strained and ultimately lead to tragic consequences for both himself and those around him.