Mysterio is a fictional character in Marvel Comics, and a supervillain who has appeared as an enemy of Spider-Man. He was created by writer Stan Lee and artist Steve Ditko, and made his first appearance in The Amazing Spider-Man #13 in 1964.
Mysterio's real name is Quentin Beck, a former special effects artist and stuntman who turned to a life of crime after failing to achieve success in Hollywood. He uses his skills in illusions and special effects to create elaborate schemes to defeat Spider-Man and commit various crimes.
One of Mysterio's most notable abilities is his use of advanced technology to create convincing illusions that can fool even the most skeptical of observers. He often uses this power to create terrifying monsters, holographic doubles, and other distractions to keep Spider-Man off balance.
Despite his villainous nature, Mysterio has also been portrayed as having a code of honor, and has occasionally worked with other villains to take down a common enemy. He has also been a member of various villainous groups, including the Sinister Six and the Masters of Evil.
Mysterio has appeared in various adaptations outside of the comics, including animated series, video games, and the Marvel Cinematic Universe film Spider-Man: Far From Home, in which he was portrayed by actor Jake Gyllenhaal.