| Category | Groups |
| Type | cult |
| Region | see below |
| Headquarters | none - decentralized |
| Size | 50,000+ |
| Alignment | chaotic |
| Deities | Krak-Oth, others |
| Purpose | chaos, mayhem, creation, mutation |
| Established | 11 Witchrite 783 |
Entropy is an organization with principles tracing back to the era of the primordials. They habitually work to undermine the stability of the surrounding peoples and regions. The fanatically resolute adhere to the Primordial Mandate, with its ultimate objective of unraveling all of Creation.
Largely a decentralized organization, its members customarily evade alliances between cells. Those who have embarked on this path are commonly expunged from the rosters, then pursued with lavish bounties.
In the year 1296, the organization's Mutation cell established a rift known as the Sink of Chaos. The resulting aftermath was the chaos infusing of the land and inhabitants of Hleittil.
In the First Ogre War (1505 - 1511), Entropy's beast division, the Savagor, gained a formidable reputation and substantial wealth by supplying Skullcrushers to the Toomrur Hegemony.
In the year 1814, members of the Disorder cell infiltrated the vaults beneath Nárfaltuin and extracted three Entropy Fragments from the Pinnacle of Chaos.
The onset of the Chaos War (1828 - present) saw the Entropy cells adopt a militant stance. Covertly and overtly, they pledged allegiance to the forces of Chaos. Their most significant contribution to the war occurred in 1832, when an Entropy Arch was deployed within the streets of Garaldrarg.
| Cell | Region | Location | Leader |
|---|---|---|---|
| Savagor | Hells Womb | Vrak-Tror | Holigome |
| Disorder | Cinazan | Garaldrarg | Mieleth |
| Frenzy | Drarthiel | Urla'palos | Kraadred |
| Mayhem | Aerie of Dragons | Madragh | |
| Mutation | Ice Cap | Mogdúlg | Irmerthun |