The Blue Lions are one of the three student houses at the Garreg Mach Monastery Officers Academy. It is comprised of students who hail from the Holy Kingdom of Faerghus. As their homeland is known for its knights, many of the students are proficient at using spears. Thanks to the cold climate of the Holy Kingdom of Faerghus, they are also host to the rare pegasus and have made an art of taming and riding them in battle.

The Blue Lions were named after the founder of Faerghus, Loog, the King of Lions, who had a penchant for wearing blue.