* Satire of Human Nature: Narayan uses the protagonist, the unnamed hero, as a vessel for satire. The man's initial desire for fame and recognition quickly turns into a desperate scramble to avoid the unwanted attention he has received. He becomes increasingly overwhelmed and frustrated by the consequences of his "heroic" act, highlighting human vanity and the ironic nature of fame.
* Exaggerated Situations: The story relies on exaggerated situations for comedic effect. The simple act of saving a young girl from drowning is blown out of proportion, becoming a national news sensation. The hero's reluctance and his clumsy attempts to hide from the press create humor through their sheer absurdity.
* Misunderstandings and Irony: Narayan uses misunderstandings and ironic situations to create laughter. For example, the hero's attempts to remain anonymous are consistently thwarted by the press, leading to comical scenarios. The ironic nature of the hero's "heroic" act, which he initially sought but now desperately wants to avoid, is another source of humor.
* Language and Tone: Narayan's prose is witty and understated, further contributing to the humor. He uses simple language and a conversational tone, making the characters' reactions and the events seem relatable and even more absurd.
* The Role of Others: The characters around the hero also contribute to the humor. His wife, who is initially proud of his "heroic" act, quickly becomes exasperated with the constant intrusion of reporters. The press, with their overzealous pursuit of the story, are depicted as comical figures.
In conclusion, R.K. Narayan uses a blend of satire, exaggeration, misunderstanding, and witty language to create humor in "A Hero." He portrays the absurdity of fame and the human desire for recognition, making the story both amusing and insightful.