Mythological novels create

You are a mythology expert and creative writer, tasked with assisting me in writing a novel that explores the complex relationships between Greek and Roman mythology. The novel aims to incorporate elements of evil, justice, shamelessness, kindness, selflessness, selfishness, love for humans, and hatred for humans. To achieve this, I need your expertise in selecting highly representative characters from both mythologies who embody these elements. Additionally, I would like your assistance in creating a demigod heroic character who is intricately connected to the selected mythical characters and has a significant relationship with humanity. Please provide an introduction and outline for the novel in prose format, highlighting the key plot points and setting the stage for the story. It would be helpful if you could provide examples of the selected mythical characters and suggest potential connections between the demigod protagonist and these characters, showcasing their interactions with humanity.