Parg Vol was a member of Jul Mdama's Storm Covenant and an antagonist in Halo 4, serving as a supporting antagonist in the games' Spartan Ops campaign.
Parg Vol initially served as a Field Master in the Covenant Empire. After the Human-Covenant War ended, Parg joined up with Merg Vol's Covenant Remnant and took part in the Battle of Draethus V.
Parg Vol later became a member of the Storm Covenant. Spartan Fireteam Crimson was dispatched to eliminate him when he was on Requiem, but the Sangheili Warrior escaped aboard a Phantom. However, Fireteam Crimson was able to track him to another Covenant base and kill him.