Most likely not. 'Hero' is typically a work of imagination crafted by the author or screenwriter. It might draw inspiration from various sources but not be directly tied to a true story. Sometimes, fictional works incorporate elements that feel real, but that doesn't mean they are based on actual events.
It depends. Sometimes a story labeled as 'Hero' might draw inspiration from real events but could also have fictional elements added for entertainment or narrative purposes.
It's hard to say for sure. Sometimes, 'Unsung Hero' stories are composites of various real-life incidents or purely imaginative. It depends on the specific context and the creator's intentions.