The number of Marvel comic heroes is constantly changing and growing. As of now, there are well over 8000 characters, but new ones are always being introduced.
Mysterio, also known as Quentin Beck, was a special effects expert in the Marvel universe. He was originally from Earth - 616. Beck was a brilliant but egotistical man. He created elaborate illusions using his skills in special effects and holography. Dissatisfied with his lack of recognition in the movie industry, he turned to a life of crime. He decided to use his skills to deceive the world and make a name for himself as a super - villain. He often used his illusions to create false threats and then 'defeat' them, making himself look like a hero initially, but his true motives were always self - serving.
Oh, yes! Marvel is not just a comic book series; it's a huge universe of comics with countless heroes, villains, and epic adventures. The series has grown and evolved over time, becoming a cultural phenomenon.
Krull was not a Marvel comic book. It had its own standalone story and creative background separate from Marvel's comic book lineup. Marvel has a vast range of characters and titles, but Krull wasn't among them.