The Zamorakian quartermaster represents Zamorak and allows players to purchase armour, emotes, titles, consumables, and exp lamps using renown. Renown is earned by gathering and submitting Divine tears to help in Zamorak's cause. He runs the Requisitions shop. After the Battle of Lumbridge ended, he was the only Zamorakian to remain at his post at Zamorak's camp. He continues to allow loyal followers of Zamorak to claim rewards using renown. He will refuse to talk to anyone who sided with Saradomin during the Battle of Lumbridge.
The quartermaster explains the rewards