Nick Dunne is a fictional character from the novel and film titled Gone Girl, created by author Gillian Flynn. He is portrayed as a complex individual who becomes the prime suspect in the disappearance of his wife, Amy Dunne. Nick's character is marked by his struggles with personal and marital issues, as well as the media's intense scrutiny. Throughout the story, Nick's personality is revealed through his interactions and the unfolding mystery. He is depicted as a flawed man, grappling with the consequences of his actions and the secrets that emerge during the investigation. His character raises questions about truth, perception, and the nature of relationships.