This study analyzesthe main characters of Resident Evil 1-3 through Henry Murray’s needs-press theory and the Big Five personality model, by examining the interaction of psychological needs and environmental pressures, the research identifies how character traits shape both narrative roles and player immersion. Protagonists such as Jill, Chris, Claire, and Leon show strong needs for achievement, affiliation, and nurturance, aligning with high conscientiousness and agreeableness.In contrast, antagonists like Wesker, William, and Nikolai are driven by dominance, autonomy, and recognition, reflecting low agreeableness and strategic openness. Nemesis fuctions as a symbolic press that continuously provokes survival and defensive needs. These findings demonstrate that applying psychological theories to game character analysis not only deepens our understanding of survival horror narratives but also suggests valuable implications for character design in digital games.