acted as centerpieces for the eponymous company-wide crossover storylines.

Between 2019 and 2021, Hickman spearheaded the "Dawn of X", a relaunch of various X-Men-related titles for which he provided the core storyline and concepts. This relaunch began the Krakoan Age of which Hickman was the early main architect. This relaunch began with the dual comic book miniseries House of X and Powers of X