Most likely not. In the world of wrestling, there are often unfounded rumors. Rey Mysterio is a well - respected figure, and such a demeaning story is probably baseless.
Perhaps this is a very niche or local story. Rey Mysterio has a huge fan base around the world. He has entertained millions with his lucha libre style. It's possible that this 'story' is something fabricated by a small group who may have some sort of grudge or just trying to create controversy, but there's no evidence of any legitimate negative story that is common knowledge.
No, they're not exactly the same. There are often some differences in the portrayal and abilities of Mysterio between the comics and other adaptations.
Yes, Mysterio is often depicted as an illusionist in the comics. He uses his skills to create elaborate and deceptive illusions to outwit his opponents.
Definitely. Mysterio is a villain in the comics. He often uses his special effects and mind tricks to outwit heroes and cause trouble. His motives are usually self-serving and malicious.