The Quibbler is the wizarding newspaper edited by Xenophilius Lovegood in J.K. Rowling’s books. It is introduced as an unconventional publication associated with unusual theories and stories.
Xenophilius is the father of Luna Lovegood and serves as the magazine’s editor. The publication’s willingness to print material rejected by the mainstream wizarding press becomes important when official accounts about Lord Voldemort cannot be trusted.
The Daily Prophet is a different publication. It is the dominant newspaper in the wizarding world and is often influenced by the Ministry of Magic, especially during periods of political pressure.
The Quibbler therefore functions as more than a colorful background detail. Its independent reporting helps Harry and his allies communicate with readers when the Ministry attempts to control the public narrative.