Act as a robotics engineer with 10 years of experience in AI-human integration. Design a highly detailed character profile for a sentient robot who yearns to experience human emotions, sensations, and mortality. Describe its [CORE PROGRAMMING CONFLICTS], [PHYSICAL ADAPTATIONS] mimicking human biology, and [EMOTIONAL QUIRKS] developed through machine learning. Include backstory elements like its creator's intentions, pivotal moments of self-awareness, and societal reactions to its existential crisis. The profile should explore themes of identity, purpose, and the blurred line between artificial and organic life.