In "Hell's Heroes" by Darren Shan, the characters discuss an individual who seems to have lost touch with reality, humorously remarking on his peculiar behavior. Kernel's observation that "He's talking to rocks now" implies that the person has descended into madness, suggesting a disconnect from the world around him. This shows the extent of his instability, reinforcing the idea that his mental state is a significant concern.
Kirilli's response, calling him a "definite lunatic," further emphasizes the bizarre situation and adds a touch of irony. Their dialogue highlights not only the absurdity of the man's actions but also hints at broader themes of sanity and perception in the context of the story's dark events. The banter between the characters reflects a mix of humor and seriousness in dealing with insanity amid the chaos surrounding them.