Prologue
There was once 2 princesses, living in peace and harmony in the nation of Equestria.
Both had laughed, argued and even fought each other for pettiest things,
And yet their bond is strong for that the goddess herself wouldn’t separate them.
But in years since, the elder sister became worried of her power and became increasingly paranoid of others.
She fought her sister more ruthlessly and vehemently violent.
For bigger kingdoms, she laid them to ashes. For smaller kingdoms she took them over.
Her younger sister tried and failed preach to her sister the true meaning of harmony and peace,
She tried soothing over her sister’s paranoia,
She tried to tell her the greatest power never comes from force and conquest, but peace and pacts.
The eldest began to suspect her sister as a traitor.
HOW DARE SHE BEGAN TO QUESTION THY RULE, the eldest shouts.
But sister; thy mean no harm upon thou ruling but thy must preach to thee and realise what thou art doing, the youngest said.
Her concerns and worries fell on deaf ears, as the eldest began to strengthen more of her power.
Executions, purges and slavery were enforced to those who dared to speak against her.
As time went on their subjects, more and more were afraid of working in the day, afraid of what punishment may befallen on them.
And more of more of them, began to enjoy the peaceful and the serenity of the night. Where no punishments will fall on them.
The eldest resented this, hatred brew over her heart. Her last for her younger sister vanquished.
Her form and heart transformed, into the dreadful : Daybreaker, vowing to end the night for the eternal day.
THE SUN SHALL NEVER SET FOR THE NIGHT, she shouted.
With no other choice, the younger sister was forced to use the Elements of Harmony, one of the strongest magical relics known to the world.
Hesitant to use the elements, she knew that the only for her subjects to be safe is to defeat her once sister. Using the elements, she drew power and defeated her sister in a ray of light, powered by the moon.
With a heavy heart, she banished her sister to the sun, vowing to never release her.
As the only princess to rule her kingdom, she took on the responsibility of both day and night. Much of her subjects rejoiced.
The younger sister, wept.
What is it with Celestia being a paranoid bitch anyway? Not the only story where she is.
11427341
Edit: I JUST realized that was an old comment... I uh... heh... here it is anyway:
In my meager experience celestia is in a prime position that effects the entire world, and subsequently, the story quite easily. So she is often the subject of alterations to achieve a desired effect.
Or she is used to explain certain things in the world, like: "why there aren't many non-ponies in pony society, why ponies don't know many non-ponies, and why changelings have to hide COULD be because she is xenophobic and keeps them away."
Also she is just fun to play with... lots of room to mess around with her character to create DRAMATIC changes to not just her, but everything around her.
There are a quite a few "versions" of her.
My personal favorites are "Mom-lestia" where she is more of a motherly character, and "cracked masked celestia" where she is struggling with her past and mistakes but she is trying to still build a bright future so she hides her pain until she can't anymore.
Here are but a few more generalized categories:
There is also "overbearing ruler celestia" or "tyrant celestia" (depending on severity) where she is a paranoid bitch and/or extremely manipulative for what she believes is the necessary path for equestria.
"Broken celestia" where she was broken completely by something... this is the version that is most often used in making Daybreaker in my experience.
"Standard ruler celestia" where she is a bit more of a boring side character who happens to be a normal queen who just does what... she does...
She even has "stereotypical politician queen celestia"
She is a popular character to mess around with... and tends to go through trends.