Rigel (リゲル帝国 Riguru Teikoku lit. Rigel Empire) is a kingdom located in the northern part of Valentia. Its people worship the Dark God, Duma, and because of this, Rigel is a nation heavily reliant on strength. They are known as "savages" to the people of Zofia. The Duma Tower was built towards the north of the Kingdom. During the events of Fire Emblem Gaiden, the kingdom is ruled by King Rudolf. Rudolf first used the Falchion to seal Mila, and then helped Desaix take over and control Zofia.
Founded on the year 189 of the Valentian Calendar, the Rigelian Empire was established in the northern region ruled by Duma. In the year 374, Rudolf was appointed as the successor of the Rigelian Emperor Rigel III, ascending as Emperor Rudolf I. In the year 398, poor harvests caused the food-stocks of the Rigelian Empire to run dry. Due to Rigel's request for assistance from Zofia being met with rejection, Rigel started a war against Zofia, with Rudolf himself leading the troops to the invasion. A year later, despite the army's repeated successes in the war, the upper echelon of the Rigelian Army negotiated a cease-fire in exchange for a large compensatory sum of gold. The Rigelian Army remained garrisoned in Northern Zofia in the aftermath, with tensions rising.
- Rudolf - The emperor of Rigel and the father of Alpine, who sealed Mila with the Falchion.
- Alpine - Rudolf's son and prince of Rigel.
- Berkut - Emperor Rudolf's nephew. (Exclusive to Echoes: Shadows of Valentia)
- Linea - A noblewoman from Rigel engaged to Berkut. (Exclusive to Echoes: Shadows of Valentia)
- Massena - A general from Rigel and captain of emperor Rudolf's personal guard.
- Zeke - An amnesiac general of Rigel and the lover of Tatiana.
- Jerowm - A cruel general of Rigel who orders his men to raid villages.
- Seazas - A general of Rigel who guards the Zofian border. Exclusive to the original game.
- Magnam - A Rigelian commander.
- Mueller - A Rigelian commander.
- Zack - A Rigelian commander.
- Gazelle - A Rigelian commander.
- Lawson - A Rigelian commander.
- Tatiana - A Rigelian Saint who is betrothed to Zeke.
- Hark - The former Great Sage of Duma.
- Jedah - The current High Priest of Duma, exiled Hark for the position.
- Marla - The oldest daughter of Juda with deep loyalty to Duma.
- Heste - The second daughter of Juda with deep loyalty to Duma.
- Dolk - A Priest of Duma who can control Draco Zombies.
- Jamil - A Priest of Duma with a great reverence for his god.
- Sonya - A subordinate of Grieth and the youngest daughter of Juda.
- Nuibaba - The master of Fear Mountain who sold its soul for the power of Medusa.
- Saber - A former Rigelian soldier turned seafaring mercenary.
- Leon - An ex Rigelian archer traveling with his companion Valbar.
- Tatra - A sorcerer who guards the floodgates of Rigel.
- The emblem of the Valmese Empire from Fire Emblem Awakening is the same as the Rigelian Empire, only without the sword.