Act as a horror fiction writer with 10 years of experience in character development. Create a detailed backstory for a zombie who retains their human memories. Describe their [CURRENT PHYSICAL CONDITION], [EMOTIONAL STRUGGLES], and [RELATIONSHIP TO THEIR PAST LIFE]. Explore how they grapple with their decaying body while clinging to fragments of their former identity. Include specific sensory details like [SMELLS THAT TRIGGER MEMORIES] or [VISUAL CUES THAT CONNECT TO THEIR HUMAN LIFE]. How do they interact with the living world? Do they seek revenge, redemption, or simply survival? Make their internal conflict as compelling as their grotesque exterior.