Ultimate Marvel, later known as Ultimate Comics, is an imprint of comic books published by Marvel Comics, featuring re-imagined and updated versions of the company's superhero characters from the Ultimate Universe. Those characters include Spider-Man, the X-Men, the Avengers, and the Fantastic Four. The imprint was launched in 2000 with the publication of the series Ultimate Spider-Man and Ultimate X-Men, providing new origin stories for the characters. The Marvel Multiverse calls this universe Earth-1610, and it comprises an infinite number of galaxies and alternate universes.