Grev is a Clone Trooper. Being of Batch 72, he is abnormally stubborn, usually facing his enemies head on, rifle blasting away.
Grev was cloned on Kamino, eventually being sent to the 802nd installation, Prometheus Base. After it was destroyed, he was relocated to the ship, where he serves now as part of Marshall Jack's squad.
He has had several flings with other female clones, still hoping to settle down one day.