Domino

Few characters have embedded themselves in Marvel's mutant landscape quite like Domino, who burst onto the scene in 1991 courtesy of Rob Liefeld and Fabian Nicieza — right at the height of the Copper Age's bold, kinetic energy. With 319 catalog appearances spanning an impressive 34 years, she's proven herself a genuine fixture of the X-universe, showing up most prominently in X-Force, Wolverine, and Weapon X — keeping remarkable company alongside heavyweights like Cable, Wolverine, and Storm. Seven key issues mark her trail through comics history, a testament to how often she's been at the center of genuinely significant moments. If you're exploring Marvel's grittier, action-charged corner of mutantkind, Domino is absolutely a character worth following.