The Lizardmen are an ancient race, created by the god-like beings known as the Old Ones to be the guardians of the Warhammer world. Their age-old civilisation is based deep within the steaming jungles of Lustria and the Southlands, where their mighty temple-cities rise amid the ancient trees and cloying swamps. The bloated Slann Mage-Priests are masters of magic and the original servants of the Old Ones, and it is they who oversee the entire Lizardmen civilisation, guiding it forwards. At the heart of the Lizardmen armies are the powerful Saurus, hulking reptilian warriors spawned solely for the purpose of war. They are revered as sacred warriors of the gods, and each temple-city has an army of them dwelling beneath the temples, ever ready to march against their foes.

In ages past, the Old Ones departed the world in an event of catastrophic consequence, known as the Fall, that dramatically altered the world and stranded - their servants alone there. Without the guidance of their creator-gods, the Slann work to interpret the Great Plan that their masters were working towards and attempt to continue the cause, restoring the order that was present before the coming of Chaos. With cold, alien indifference, the Slann guide their armies towards the fulfillment of this plan, and mercilessly punish any who stand in the way of their sacred mission.