Dong Huo is a mummy who was buried in Shang Simla some time ago. He is said to have been a ruthless, influential, yet despised tyrant who serves as the main antagonist of some Shang Simla adventures. He is mostly known for "stealing" valuable relics from the other Sims, whose descendants want these relics back. His treasures are mostly hidden in a tomb beneath the Market. His most prominent appearance is during the adventure called "Prophecy of the Dragon Cave". It is here revealed that Dong Huo was eventually sealed in The Dragon's Maw by James Vaughan, and the keystone was brought to Champs Les Sims, in France. However, Vaughan seems to have not completely succeeded to lock Dong Huo, and a prophecy states that only one sim, a high-level tournament-winning martial artist, could defeat him forever.
Dong Huo makes one on-screen appearance, as a mummy. Deep inside The Dragon's Maw is his sarcophagus. The Sim of the prophecy locks away his spirit in order to vanquish him once and for all.
- There are two other mummies located in the same area he is located. It is unknown if they are relatives or loyal servants.
- "Dong Huo" is likely a reference of "Dong Zhuo" (138-192), a notoriously brutal warlord during the early Three Kingdoms period of the late Han dynasty in China. This was confirmed in-game, where Dong Huo was referred to as the "Scourge of the Three Kingdoms." The historical Dong Zhuo was infamously known for the sacking of Luo Yang, the imperial capital at the time, and hoarding large amounts of treasure in his own private fortress.