Sephi were a species of lavender-skinned, humanoid sentients. They had long tapered ears that could twitch, swivel and flatten in accordance with the emotional state of the subject. Eira Tay, a female Sephi, worked as an engineer aboard the freighter Eclipse. The Sephi made aerial craft known as flyers.
- Tarkin (First mentioned; albeit indirectly)
- "Mercy Mission"—The Rise of the Empire (First appearance)