Romlan Homeworlds
Romulus and Remus are the two Romulan homeworlds. Although both planets orbit their central star, Romulus and Remus are often referred to as a double planet.

Romulus had no sentient species until a revolutionary Vulcan movement colonized it around 400 AD. These revolutionaries, over time, became the Romulans. A sapient species called the Remans developed on Remus and was conquered by the Romulans, later becoming a lower class in Romulan society.

The original colonization group of Rihannsu came to this system after they fled their homeworld in rebellion against the philosophy of peace and logic proposed by Surak.