https://en.wikipedia.org/wiki/Casper_the_Friendly_Ghost#Creation
Someone asked me if it was ever established why Casper died in the cartoons. I didn’t realize that the title of the cartoons and the movies and that song about him were all based in theory.
I look forward to the peer-reviewed journal article which will establish this theory further.
That’s just a theory.
You need to take a look at what people are coming up with in the Journal of Alternate Casper Science.