Actor James Marsters, who played Spike in the series, revealed that the show deliberately draws from Shakespeare's Hamlet as its thematic foundation. Both works centre on young protagonists grappling with overwhelming circumstances and existential uncertainty—Hamlet explores these through a prince confronting family betrayal and moral corruption, while Buffy addresses comparable philosophical struggles in ways designed to resonate with teenagers rather than adults.

Marsters explained that Hamlet's ultimate message—that one should commit to meaningful action despite life's chaos—forms the backbone of Buffy's narrative arc. The distinguishing factor is that Buffy repackages this existential argument specifically for younger viewers, encouraging them to identify their own values and causes worth defending. This transforms what Marsters described as a primarily adult philosophical exercise into a practical roadmap for adolescents facing hardship and despair.