Timeline A: 1979
When Victor starts hunting down former members of Team X, Logan finds himself inducted into the Weapon X program at Stryker’s offer, infusing his skeleton with the ultra-strong metal adamantium in order to make him strong enough to stop Victor. After Stryker attempts to brainwash Logan into becoming his own personal assassin, he escapes, and eventually learns that Victor was actually still working for Stryker, acquiring genetic material from mutants and prisoners for Stryker to experiment on at a facility on Three Mile Island.
After betraying Victor, Stryker activates Weapon XI, a genetically enhanced version of Logan and Victor’s former Team X ally Wade Wilson, a “Deadpool” amalgam of various mutant abilities. Logan kills Weapon XI, but is shot in the head by an adamantium bullet, causing him to lose his memory in the process. (X-Men Origins: Wolverine)
