Archonix 
"[@moonlightaveger":](/images/2266411#comment_8793915
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The fandom has long held the idea of celestia having a similar "inner demon" to Luna. She was usually called something dumb like daycmare sun, or more creatively, solar flare. If anything, daybreaker is a nod to that.
Retired Ass
The fandom has long held the idea of celestia having a similar "inner demon" to Luna. She was usually called something dumb like day