Rockslide is a fictional mutant superhero appearing in American comic books published by Marvel Comics. The character has been depicted as a member of the X-Men, and a student in the Xavier Institute and a member of the former Hellions squad therein. After M-Day, he was one of only 28 students to retain his powers. He is best friends with Julian Keller (Hellion) and is extremely close to and protective of Cessily Kincaid (Mercury). Despite his earlier appearances as a stereotypical bully, he has evolved into a good-natured and fiercely protective friend to most of the school's students.

Several fictional groups of mutants have used the name Hellions in American comic books published by Marvel Comics. The Hellions have always been portrayed as rivals of various teams of younger mutant heroes in the X-Men franchise, initially as actual villains and later on a team that was more of a school rival than actual enemies of the X-Men.