Agent Green

Agent Green is a fictional character and the major antagonist of The Matrix franchise.

Overview
Agent Green is an Agent, an AI program created by the machines to act as security to investigate and protect the Matrix from the Synthient splitter cells and their human allies. After the events of The Matrix Resurrections, Green was created with the rewritten code of Agent Smith. He was sent to the Matrix by "his superiors" (or "the suits" by the Analyst) to watch over the system and prevent any human interference while the Analyst finds a way to produce more power for the machines.