Deadpool 2 (2018)

Foul-mouthed mutant mercenary Wade Wilson (a.k.a. Deadpool) assembles a team of fellow mutant rogues to protect a young boy with supernatural abilities from the brutal, time-traveling cyborg Cable. After failing to kill one of his targets, Wade's girlfriend Vanessa is murdered. Blaming himself, Wade attempts suicide but is saved by Colossus. Recovering at the X-Mansion, Wade joins the X-Men and teams up with young mutant Russell Collins to escape prison and defeat Cable. Along with a team called X-Force, Wade and Russell confront the abusive headmaster of Russell's orphanage and alter their futures, with Wade sacrificing himself to save Russell. However, Cable uses his time-traveling device to undo Wade's death and change the future, leading to a mid-credit sequence where Wade uses the device to alter various events.