seidr_(fire_emblem)
A character from Fire Emblem Heroes introduced in Book VII, who is a Goddess from Vanaheimr who bestows a revelation on the Summoner of Gullveig (Fire Emblem)'s ruinous future. Like Fjorm (Fire Emblem), she is strongly implied to have romantic feelings for the summoner. She also has a poor sense of direction and often gets lost.
She is particularly notorious for asking the summoner to "make a child" with her.
Seidr is also the person who eventually becomes Gullveig, and Kvasir (Fire Emblem) is her past self.