It's hard to say for certain. Sometimes movies or stories like Vivo blend real-life inspirations with imagination to create a unique narrative. It could be a combination of both real and made-up elements.
Vivo is purely fictional. The story and characters were imagined by the filmmakers to bring a unique and charming animated adventure to the screen. There's no real-life basis for it.
The creation of The Simpsons comics involves a group of talented individuals. Different issues might have different creative teams, but typically they include experienced comic writers and artists who are passionate about bringing the Simpsons world to life on the page.