Sapphie 
Senior Moderator
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Given that I couldn’t find a headcanon thread, lemme start one.
One of my headcanons is about Luna’s banishment. When the elements of harmony sent her to the moon, they split her soul up into 23 pieces. The largest piece ended up sealed away on the moon, and, alone, it wasn’t powerful enough to break free. The remaining 22 pieces were reborn as mortal ponies who would each inherit some aspect of Luna.
Some would inherit her love for her sister, and would end up devoting their lives to the sun princess. Others, on the other hand would inherit her resentment for Celestia, and would waste their lives in futile rebellion.
Others would get obsessed with the night sky.
Those are only the extreme examples though. A lot of lunar entities would have those tendencies, but would never act on them enough to define their life through it.
All those ponies ended up looking in some way similar to Luna. Never quite carbon copies, they often had dark coats with some shade of blue in their mane.
When one of them would die, the bit of Luna’s soul they held would get reborn as a foal.
Eventually, a unicorn ended up inheriting her scholar tendencies while being born into high society. She asked herself the right questions and came to the correct conclusion. According to her theory, in order for Luna to be reborn, the pieces souls outside the moon needed to be strong enough to break the barrier, which implied that most of the soul’s shreds had to be unbound by flesh. In other words, every pony who held some of her soul needed to be dead at the same time.
She founded a secret group comprised of only Luna’s descendants. Many centuries later, that group finally found all (most?) of the missing soul’s bits. On the 1000th Summer Sun celebration, those willing committed suicide, while the unwilling were murdered.
Bonus headcanon: Twilight Sparkle was born with Luna’s affinity for the stars (i.e. magic), and was the only part of Luna’s soul that was still bound when the lunar regent was resurrected. As a result, she accidentally absorbed a big chunk of the souls that were freed that night, which eventually led to her becoming an alicorn.
One of my headcanons is about Luna’s banishment. When the elements of harmony sent her to the moon, they split her soul up into 23 pieces. The largest piece ended up sealed away on the moon, and, alone, it wasn’t powerful enough to break free. The remaining 22 pieces were reborn as mortal ponies who would each inherit some aspect of Luna.
Some would inherit her love for her sister, and would end up devoting their lives to the sun princess. Others, on the other hand would inherit her resentment for Celestia, and would waste their lives in futile rebellion.
Others would get obsessed with the night sky.
Those are only the extreme examples though. A lot of lunar entities would have those tendencies, but would never act on them enough to define their life through it.
All those ponies ended up looking in some way similar to Luna. Never quite carbon copies, they often had dark coats with some shade of blue in their mane.
When one of them would die, the bit of Luna’s soul they held would get reborn as a foal.
Eventually, a unicorn ended up inheriting her scholar tendencies while being born into high society. She asked herself the right questions and came to the correct conclusion. According to her theory, in order for Luna to be reborn, the pieces souls outside the moon needed to be strong enough to break the barrier, which implied that most of the soul’s shreds had to be unbound by flesh. In other words, every pony who held some of her soul needed to be dead at the same time.
She founded a secret group comprised of only Luna’s descendants. Many centuries later, that group finally found all (most?) of the missing soul’s bits. On the 1000th Summer Sun celebration, those willing committed suicide, while the unwilling were murdered.
Bonus headcanon: Twilight Sparkle was born with Luna’s affinity for the stars (i.e. magic), and was the only part of Luna’s soul that was still bound when the lunar regent was resurrected. As a result, she accidentally absorbed a big chunk of the souls that were freed that night, which eventually led to her becoming an alicorn.
