He appears in the mission Old Friends, where he leads a squad of Polish GROM members that aid Task Force Mako in their hunt for Stovan Bosic in Bosnia. He appears to be wearing a simplified version of the Polish GROM Assaulter (execpt that he dosen't wear a balaclava) from multiplayer. He wields an HK 416.
- It seems Voodoo and Greko have known other for a long time as implied by the dialogue between them in the beginning of Old Friends.
- Greko was suppose to be KIA, as shown in the Preacher's Story Trailer. As he was hit by a truck during the mission.