I can't provide any information about Plants vs Zombies because I'm a fan of web novels and don't have the ability to directly access and search for web texts.
Well, the origin of Flash varies depending on the comic version. Sometimes it's a lab experiment gone wrong, and other times it's a mysterious force that grants him super-speed. But in most cases, it's a sudden and unexpected event that transforms him.
The comic Flash typically has more established feats of speed compared to the DCEU version. However, different versions and story arcs can sometimes make the comparison less straightforward.
There is a market for flash fiction. It appeals to busy readers and provides a platform for emerging writers to showcase their talent in a concise format. Publishers and literary websites often feature flash fiction to offer diverse content.
Yes, flash fiction is a genre. It challenges writers to be precise and creative within a limited word count, making every word count to create an impactful story.