In Tolkien lore, the narrator of The Hobbit is the only human connection to the world of Middle Earth. He is not, as some have suggested, a hobbit himself. In spite of his humanness, however, he apparently has a great amount of information about the time in the world "when there was less noise and more green." He is also a narrator with opinions. In fact it is clear that for the narrator the whole telling of The Hobbit is a teaching tool; however much adults may enjoy Bilbo's adventure, the teller is talking to children. Being a creation of Tolkien's special imagination The Hobbit's narrator deserves more study to determine his purpose and his true nature.
Rearick, Anderson III
"Father Knows Best: The Narrator's Oral Performance as Paternal Protector in The Hobbit,"
Inklings Forever: Vol. 8
, Article 21.
Available at: https://pillars.taylor.edu/inklings_forever/vol8/iss1/21