- "I have been to over a hundred different worlds, and none display the awesome beauty of Romulus."
- — Alidar Jarok
Romulus was the Class M homeworld of the Romulan subspecies and capital of the
Romulan Star Empire.
- In the novels of Diane Duane and other continuities, the world was called ch'Rihan. (TOS novel: My Enemy, My Ally, TOS novel: The Romulan Way)
Romulus was the home of the Romulans, who were an offshoot of the Vulcans. During the 4th century CE, a group of Vulcans left their homeworld Vulcan and settled the planets Calder II, Dessica II, Draken IV, Yadalla Prime and Barradas III. This civilization, called the Debrune, was regarded as a predecessor of the Romulan Star Empire. After their odyssey, which lasted for centuries, the Vulcans finally reached Romulus, a planet that matched all their needs and seemed as a perfect place to begin a new civilization.
During his time as an Obsidian Order operative, Elim Garak worked at the Cardassian embassy on Romulus as a gardener. (DS9: "Broken Link", "Inter Arma Enim Silent Leges")
In 2375, during the Dominion War, Romulus hosted a Federation Alliance conference. ("Inter Arma Enim Silent Leges")
The Female Changeling promised Thot Gor control of Romulus if the Breen "fought well" at the Battle of Cardassia. (DS9: "What You Leave Behind")
In 2387, Romulus was destroyed by the expanding Hobus supernova. (Star Trek)
After the destruction of Romulus by the Hobus supernova, the system in which Romulus was located was called the Romulus Nebula. (RIS Bouteina: "Gogmagog")
Romulus and Remus were the major worlds of the Romulan Star Empire, one of the mightiest powers in the Alpha and Beta Quadrants.
The capital city was Dartha. (ENT novel: The Romulan War: Beneath the Raptor's Wing) The Hall of State was situated in this city, on Romulus. The Imperial Romulan Senate met there in the Senate Chamber.
Romulus is a temperate Class M planet, which harbors numerous large lakes and oceans. Although both planets orbit their central star, Romulus and Remus were often referred to as twin planets.
Cities and towns: