The Guardians of the Righteous was a terrorist organization active in 2558. Though were officially loyal to Jul 'Mdama and his Covenant, the Guardians worked autonomously and were known to work with humans to complete their missions.
The earliest known activity of the Guardians of the Righteous was in March 2558. They set up a base on Ealen IV in preparation for tripartite negotiations between representatives of the United Nations Space Command; the Swords of Sanghelios and the Jiralhanae Chieftain Lydus. They planned to assassinate the representatives during this meeting, ensuring the collapse of any peace attempt between the three by allowing their respective militaries to blame one another. Their assassination attempt ultimately failed and the representatives were evacuated from the planet by a Spartan team, who took heavy casualties in doing so.