The Rev-9 was sent back by Legion in 2042, several hours after Grace had arrived. The time displacement equipment had placed it in the air in a Mexican condominium where Dani Ramos lived. After its arrival, the Rev-9, which lacked clothing, touched a woman's laundry, which allowed it to copy the clothing, and began looking for Dani Ramos. The machine arrived at Dani's home, only to find Vicente Ramos informing the machine that Dani had left for work along with Diego, her brother. The machine killed Vicente and impersonated him to gain the trust of Dani at her workplace, only for his plan to be foiled by Grace Harper. As Dani, Diego and Grace escape the factory, the Rev-9 pursued them in a truck. The Rev-9 managed to kill Diego and corners both Grace and Dani by splitting into two istinct halves, but it was stopped by Sarah Connor with high power weaponry.
Trying to reacquire its target, the Rev-9 used its advanced mimetic polyalloy to hack into various surveillance cameras and saw that the group was attempting to cross the U.S. border into Texas. Impersonating Maggie Curtis, a Border Patrol agent, and hijacking one of the control centers, the machine had the group arrested, almost killing them by crashing a drone into their path. The machine slaughtered various people in a holding facility in a attempt to get to Dani, but it was still unable to fulfil its mission when she managed to escape in a helicopter with Grace and Sarah.
The machine reacquired the group, now allied with Carl, in a helicopter shortly after Sarah Connor received a case with a pair of EMP devices from her acquaintance, Major Dean, in an attempt to destroy the menacing Rev-9. The machine chased the group into Bingham Air Force Base where Major Dean was stationed, with Dean notifying the base of the incoming threat. The group escaped in a C-5 cargo plane, but they were chased again by the machine in a hijacked aerial refueling aircraft. The machine crashed into the group's aircraft and boarded the plane, engaging in heavy combat against Carl while Dani, Grace, and Sarah parachuted away from the heavily damaged aircraft. The Rev-9 and Carl are both flung from the aircraft and land in a river current, leading to a battle that eventually resulted in the Rev-9's two halves ganging up on and overpowering the T-800.
Grace, Sarah, Dani, and Carl faced off against the Rev-9 for the final time inside a hydroelectric dam power plant. The Rev-9 tried to negotiate with Dani's protectors, even trying to reason with Carl, as they were built for the same purpose. With its attempted persuasions failing, the Rev-9 turned to combat as a last resort, during which it was battered and slashed by Carl and Grace, with fire support from Sarah. The Rev-9 was later forced into a turbine by Carl and Grace, superheating its liquid metal sheath as well as causing an explosion that mortally wounds Grace and knocks Carl offline. The now-heavily damaged Rev-9, reduced to a still functioning endoskeleton, pursued an enraged Dani, who tearfully removes Grace's thorium reactor at Grace's request before shooting the Rev-9 several times and tackling the machine. The Rev-9 managed to grab hold and choke Dani, but it was stopped by a reactivated Carl, giving Dani enough time to stab the Rev-9 in the eye with the thorium reactor, heavily electrocuting the machine. The damaged Rev-9 was then ruthlessly dragged across to a hole in the power plant by Carl, who chose to sacrifice himself along with the assassin. The reactor overloaded and both machines are partially melted into the floor, ceasing to function.
- Vicente Ramos
- Diego Ramos
- Maggie Curtis and many other Border Patrol Staff in Surveillance drone control room and in detention centre
- Nate (not clear)
- United States Air Force pilots in the aerial refueling aircraft
- Dani Ramos