Without additional context, we can't be certain about who Frank Vega is. He could be an ordinary person who did extraordinary things. For instance, he might have been a factory worker who led a strike for better working conditions and became a symbol of resistance. Or he could be a veteran with a remarkable combat story that shows his bravery and tenacity.
I'm not sure specifically which 'Frank Vega' you're referring to. There could be many people named Frank Vega. It would be great if you could provide more context like what he's known for in this 'badass true story', is he a war hero, a community figure, or something else?
Uncle Frank is strictly a fictional tale. The plot and characters were invented to tell a compelling story rather than being rooted in real-life events or people.