Rubashov is a fictional character from the novel "Darkness at Noon" by Arthur Koestler. He is a former high-ranking official in a totalitarian regime, reflecting the struggles of individuals caught in oppressive political systems. The story explores his internal conflict and moral dilemmas as he faces arrest and interrogation. Throughout the narrative, Rubashov grapples with themes of loyalty, betrayal, and the nature of power. His character serves as a representation of the disillusionment experienced by many who once believed in revolutionary ideals but are confronted with the harsh realities of authoritarianism.