Ashera's Three Heroes: Crash Course, No Spoilers

Allin(Nilla) posted an interesting Altina build (really cool hero I hope makes it in too) and I noticed that somebody said they didn't know who they were. Well, here's a crash course without any story spoilers since you learn of this background early on. So I've avoided all the possible spoilers known to man.

Back in the days of yore, when Tellius was name Zunamama (the continent where Ike is from), the Goddess Ashunera remained and she there met humanoids, animalistic in nature (IE they were animals that acted like humans). Evolution later led to the separation of their races, to beorc (humans) and laguz(taguel, kitsune, heron, etc). (Also origin of shapeshifters in the FE Verse)

After some time, and once the land had been inhabited, there began infighting, and the goddess Ashunera, in a fit of momentary desperation flooded the world, and afterwards, left the remaining to flourish, and due to her sorrow, she separated her personality into Ashera and Yune, Goddess of Order and the Goddess of Chaos. There, Ashera cast three heroes to aid her in sealing away Yune (because she became pure order, and she couldnt tolerate chaos) and those three heroes were:
Altina: First Queen of Begnion, and Owner of Ragnell and Alondite
Soan: The Lion Warrior and the Second King of Begnion (also a shapeshifter)
and Deghinsea: The Black Dragon King(There are dragon shapeshifters so if you like that idea, someday we'll get to see him)

Three Legendary Heroes in the world of Tellius who we never got to play but we did learn of. Soan was a monstrous lion that towered above men. Altina was swift, but powerful, wielding both the holy blades, and Deghinsea was a fearless and prideful dragon.This is all I can say whilst avoiding spoilers and descendancy nonsense. But in short, they are heroes that would honestly be great to see and would expand the lore of RD so much more.