Spider-Man 2099 is a fictional superhero appearing in American comic books published by Marvel Comics. The character was created by writer Peter David and artist Rick Leonardi, and first appeared in Spider-Man 2099 #1 in 1992.

The character's real name is Miguel O'Hara, a brilliant geneticist who worked for the megacorporation Alchemax in a dystopian future timeline of the Marvel Universe, specifically in the year 2099. Miguel gained his spider-powers after an experiment with a genetically engineered spider goes awry and fuses his DNA with the spider's. Unlike the original Spider-Man, Miguel's costume is sleeker and more high-tech, with retractable talons and enhanced vision.

Miguel initially used his powers to try and overthrow Alchemax and the corrupt society it represented, but later becomes a hero and protector of the innocent. He is known for his quick wit, resourcefulness, and determination, as well as his struggles with the consequences of his actions and the weight of responsibility on his shoulders.

Overall, Spider-Man 2099 is a unique and complex character, embodying both the classic Spider-Man ethos of responsibility and heroism, as well as the futuristic themes of corporate dystopia and transhuman.