In the movie she is Natasha Sax's sister, after her sister was killed she vowed to take vengance on those responsible.
In the game, Max Payne runs into her shortly after killing Jack Lupino, in their meeting she laced his drink with a sedative, leaving him for the Mob.
At seeing Vinnie's corpse, which has blown apart, "Poor guy, poor bastard."
- In the Max Payne film, Mona Sax is portrayed by Mila Kunis. Cite error: Closing </ref> missing for <ref> tag.