The book primarily focuses on the Wizard's current role in Oz and his interactions with Dorothy and the other characters. His backstory is intentionally vague, adding to the mystery and wonder surrounding his persona.
However, the book does provide some clues:
* He is a skilled illusionist and magician, suggesting a background in entertainment or possibly even a more sinister profession involving manipulation.
* He is also an inventor, as shown by his creations like the hot-air balloon.
* He is from Omaha, although this doesn't reveal much about his former life.
Ultimately, the Wizard of Oz's true identity and past remain a mystery, leaving readers to imagine what his life was like before he became the powerful and mysterious ruler of Oz.