Always the younger, weaker, and slower of the two, Luna had been continually overshadowed and now her childhood insecurities became real once again. Luna worked in the shadows, her subjects unaware of her protection both psychic and physical. Luna gradually became envious and resentful of her older sister, as ponies were awake to enjoy the day and to admire Celestia's work, whilst sleeping through Luna's night. Thestrals, also referred to as bat ponies, were and still are favoured of Princess Luna. Luna fondly employed batponies as her Royal Guard and closest servants, though most preferred the distant mountains and caves of Equestria to the growing urban centres of the new kingdom, where they faced discrimination, mistrust, and inconvenient business hours. Featuring leathery wings, fluffy ears, good night vision and batlike fangs, these ponies preferred to work and play at night. Luna loved her ponies, but it was the unofficial fourth tribe - the thestrals (batponies), the night-time counterparts of the pegasi, that she enjoyed the company of the most. Every evening, Luna would raise the moon and shape the dreams of Equestria's subjects, battling nightmares and imparting wisdom and counsel. Every morning, Celestia would raise the sun and hold court, addressing the concerns of the Kingdom and representing the royal sisters. Over a millennium ago, Luna and Celestia ruled Equestria together. Luna and Celestia Ruled as a Diarchy over Equestria

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