It's later revealed that Makima is, in actuality, the Control Devil.
Makima is an extreme fan of the Chainsaw Devil, and by proxy Denji. Fascinated by its ability to wipe out the embodied concept of a devil when eating them, her goal is bringing the Chainsaw Devil under her control, using its power to create an "ideal" world without fears.
It was discovered by Denji that Makima doesn’t remember one face from another, but that she instead perceived people who interests her through her sense of smell. Through this, he was able to kill her, knowing that she only ever saw Chainsaw Man, and never once cared for Denji.
