—Rhea's instruction to Byleth upon choosing a House.
Rhea is a character in Fire Emblem: Three Houses. She is the archbishop and supreme leader of the Church of Seiros. At Garreg Mach Monastery, Rhea can help Byleth increase their rank in Reason, Faith, Brawl, and Swords.
Rhea recognizes Byleth's talent and invites them to teach. She generally treats those around her like a calm, affectionate mother, but is vindictive towards those that oppose the Church.
- Rhea shares her Japanese voice actor, Kikuko Inoue, with Deirdre in Heroes.
- Rhea shares her English voice actor, Cherami Leigh, with Mae and Emma in Echoes: Shadows of Valentia as well as Caeda, Gwendolyn, and Cecilia in Heroes.