From Destinypedia, the Destiny wiki
Stop and Go
Projection Rifle Energy Shield
Summon Cabal High Durability Rapid Movement Limited Flight Shield Bash Shield Lunge Melee Shield Expansion
Commander Yourg is the head of the Cabal project for the upgrading of the Power Generators within Firebase Hades. They are seen in one of the many checkpoints during the Adventure Stop and Go.
Destiny 2 (First appearance)