Sol Divisive
From Destiny 1 Wiki
The Sol Divisive is a group of Vex units located in the Black Garden. Of all the Vex programming types, Sol Divisive displays the most overt religious behavior, worshiping and defending the Black Heart with religious zeal. The fact that the Vex in the Black Garden are all covered in moss and are seen in stasis indicates how long they've remained in the garden. They are also identified by their green frames and rings on their heads.