The Romulans are a Humanoid race from the planet Romulus in the Beta Quadrant. The Romulans are biological cousins of Vulcans, as they are descended from those who rejected Surak's reforms during the Time of Awakening. The Romulan Star Empire is the Romulan state and one of the major powers in known space.
Sources[]
- Romulans article at Memory Alpha, the canon Star Trek wiki.