Augustus Waters is a fictional character from the novel The Fault in Our Stars by John Green. He is a charming and witty teenager who is a cancer survivor, having lost a leg to the disease. Augustus is known for his philosophical outlook on life and his desire to leave a lasting impact on the world. In the story, Augustus develops a close relationship with Hazel Grace Lancaster, the protagonist who also battles cancer. Their bond is characterized by deep conversations about life, love, and mortality, as they navigate the challenges of their illnesses together. Augustus's character embodies themes of hope and the search for meaning.