What episodes show Natsu's past?

Natsu Dragneel's past is primarily explored in the "Fairy Tail" anime through episodes 1 and 2, where his relationship with Igneel, the Dragon King, and his childhood are introduced. Additionally, episodes 25 and 26 delve deeper into his backstory, revealing more about his upbringing and the significance of his bond with Igneel. The "Fairy Tail: Phoenix Priestess" movie also provides further insights into his character and experiences.