Speed is a fictional superhero appearing in American comic books published by Marvel Comics. The character is depicted as a member of the Young Avengers, a team of teenaged superheroes in the Marvel Universe. His powers are based on those of his uncle Quicksilver. Created by Allan Heinberg and Jim Cheung, Speed first appeared in the comic book Young Avengers #10. In the 12th issue, he adopts the costumed identity Speed and joins the Young Avengers.

The Young Avengers are the names of two superhero teams appearing in American comic books published by Marvel Comics. Created by Allan Heinberg and Jim Cheung, the first team appeared in Young Avengers #1. The Young Avengers team features numerous adolescent characters who typically have connections to established members of Marvel's primary superhero team, the Avengers.