Synch is a mutant superhero appearing in American comic books published by Marvel Comics. Created by Scott Lobdell, he first appeared in X-Men #36. Synch was killed in Generation X #70, but resurrected during the Krakoan Age in 2019. In 2021, Synch joined the X-Men team roster in the relaunched flagship book X-Men written by Gerry Duggan. He would remain on the team during the Reign of X, Destiny of X and Fall of X publishing phases and become the team leader in the final phase. The character also appeared in other related books such as the Immortal X-Men (2022) series and the Rise of the Powers of X (2024) miniseries.