New X-Men
Grant Morrison's New X-Men run demonstrated that anything and everything was possible in the X-Universe. Grant Morrison kept the roster small and tight-knit, focusing on developing and even overhauling their chosen characters. Emma Frost, a reformed villain, became the team's breakout character, with her romance with Scott Summers causing a schism between the X-Men leader and his then-wife Jean Grey.
Beast's appearance changed over time, giving rise to his more cat-like form, which lasted for over a decade. Then there was Xorn, the helmeted mutant who turned out to be Magneto in disguise, betraying the team and even killing Jean Grey (or sending her to the White Hot Room, where former Phoenix hosts are sent when they are killed). Morrison also embraced the aesthetic of the 2000 X-Men film, dressing everyone in sleek, black leather and reintroducing the concept of Xavier's School, creating characters such as Beak, Angel Salvadore, Glob Herman, Quentin Quire, and others who continue to play a role in the X-Men years later.
Publisher: Marvel Comics
First Appearance: New X-Men: Academy X #2