Following the Extinction Signal sent by Nemesis, HEPHAESTUS goes rogue and acts with malevolence, declares human beings to be a threat to the machine life healing Earth.

Source: https://gamerant.com/horizon-forbidden-west-hephaestus-machine-recovery-new-stories-aloy-retirement/

“There was a malevolence bordering on sadism in your action,” Goss said.

Source: https://triblive.com/news/world/british-nurse-lucy-letby-imprisoned-for-life-for-the-murders-of-7-babies-and-attempted-murders-of-6/

What they lack in integrity they make up for in malevolence and it's simply unthinkable that the U.S. government would be in their hands.

Source: https://www.salon.com/2023/12/08/donald-dream-team-looks-like-an-american-nightmare/