- "We wanted to make the world a better place. I chose to do it from a lab... and a board room."
- — Savannah Mason-Meyer
Savannah Mason-Meyer is the main antagonist of Call of Duty: Black Ops 4 and is a CIA operative and founder of Project Blackout. She is the granddaughter of Alex Mason and the daughter of David Mason as well older sister of Jessica Mason, and ends up ruining her relationship with her due to Savannah's actions. She is the world's first trillionaire, using her money to her advantage by spending it on weapons and hiring the Specialists, but later intending to eliminate them at the end after they learned about her plans.
Savannah and her sister Jessica Mason-Green at some point were born to David "Section" Mason, the son of Alex Mason. Wanting to change the world, Savannah decided to do it from a lab and ultimately became a C.I.A. operative and businesswoman, in which it made her the world's first trillionaire. Eventually, with her C.I.A clearance level, Savannah founded Project Blackout in a goal to bring back the dead in the form of Archetypes. Her only known successful subjects are her grandfather Alex Mason, Frank Woods (whom she started a relationship with), Viktor Reznov, Jason Hudson and Raul Menendez (who was given the position of overseeing the project).
In 2043, her actions ended up ruining her relationship with Jessica, who became disgusted in her actions, and while Menendez suggested terminating her, Savannah refused to kill her own sister. Eventually, the two sisters ended up fighting that resulted with Savannah accidentally shooting Jessica in the mouth, much to Savannah's horror. In order to cover up what she did, Savannah had the memories of her two companions, Ruin and Battery, altered into thinking that it was a botched mission that killed Jessica. Afterwards, Savannah ended up taking care of Jessica's daughter Lucy as her legal guardian, and the two would visit her grave together. She would also secretly have Woods brainwash Alex for an unknown purpose.
Two years later, Savannah recruits ten of the world's most elite soldiers for Project Blackout to handle an unknown threat. She also used a Combat Immersion program to train the Specialists in a virtual simulation, with Woods acting as their instructor. Savannah becomes increasingly paranoid after Menendez learns that Jessica was still alive and conspiring against her, thus leading to her hand over the project's leadership to the revived Nicaraguan. Realizing that the Specialists are loose ends, Savannah had soldiers sent to kill them, unaware that they all survived and Lucy had joined Jessica. Feeling like she has won, she then established facilities all over the world to continue Project Blackout.
- In the picture for the audio intel "Lost Highway", Savannah is referred to as "Dr. Savannah Meyer Ph.D.", suggesting she is a Doctor.