Rigger Gizelton is a wandering level 36 quest giver located on the road between Kormek's Hut and the Gelkis Village in the contested territory of Desolace. He is likely related to Cork Gizelton.
He starts the quest  Gizelton Caravan.
Rigger is part of the Gizelton Caravan.
See List of Desolace NPCs.