Curate, connect, and discover
I have a dilema with two opposing headcannons that include Theia, Proto-Earth, Earth and Luna. I want to write some fanfic's but just can't decide which one to go with.
Headcannon 1: The first one is where Theia and Proto-Earth fatally collide resulting in Proto-Earth (Hadian) and Theia becoming Earth and Luna respectively. Proto-Earth would loose his memory of Theia and his short couple million years of existence before the Collision, and come to see Luna as his child. Luna would have no recognition as well of anything else before and just assume they were always a moon.
Headcannon 2: Opposing to that headcannon is the idea that both Proto-Earth and Theia were both completely destroyed by the Collision event together and current Earth and Luna are both of their children. This one would make a bit more sense as the cores of both proto-planets fused to create the current Earth's core, and in the aftermath of the Collision both proto-planet's matter would have combined to create the Moon.
This would give more cadence to Earth and Luna's brotherly bond as they are literally brothers created from the same circumstances (Earth would have woken up well before Luna did to be the elder brother).
I have seen many different takes from several different artists, writers, and animatics on the origin of current Earth and Luna. Every single one is so interesting to see as we all have different ideas on how these characters would interact and how their relationships would work but I just don't know if Luna should be a brother to Earth or a child to both Theia and amnesiac Earth (Hadian).