Princess Luna (voiced by Tabitha St. Germain in the franchise and Tara Strong as a baby filly and Tabitha St. Germain as a young filly) is the younger sister of Princess Celestia, the wife of Prince Hiro, the mother of Princess Yuna, Princess Solarna, Snowdrop and Prince Isamu and co-ruler of Equestria. While Celestia controls the sun, Luna controls the moon. It is told that long ago, Luna grew bitter and jealous since the ponies, pegasi and unicorns alike flourished and played during the day, but slept during the night. One day, her bitterness got the best of her and she was turned into Nightmare Moon. Celestia tried to reason with her, but it didn't work out, so she reluctantly banished her to the moon for 1000 years, taking responsibilty for both the sun and moon. Princess Luna now enters the dreams of her subjects, mostly children, to assist them in defeating their nightmares.
1000 years later, Nightmare Moon escaped on the Star Summer Celebration and threatened on creating an everlasting night. But thanks to Twilight Sparkle, Celestia's star student, and her five friends from Ponyville using the Elements of Harmony, Nightmare Moon was defeated and turned back into Luna. Therefore, she emotionally reunited with her sister and resumed her place by her side as co-ruler of Equestria.
Ever since Princess Luna was no longer Nightmare Moon, her older sister, Princess Celestia was happy to rule Canterlot by her side as they keep the night and day going at all time.
Ever since Princess Luna first met Hiro, he was a kind and gentle Japanese engine. When he became an alicorn, he was married to Luna and became the new prince of the night.
Right after Luna gave birth to Yuna, she knew she was destined for greatness. When Yuna grows, she never stop loving her mother for accepting her for who she is no matter what.
When Snowdrop meets Princess Luna, she admires her snowflake creations. Thousand years later, Snowdrop was resurrect and revived and was adopted by Luna and Hiro as their new daughter.
After Princess Luna gave birth to Prince Isamu, she was caring for him with or without Hiro's help.
King Solar FlareEdit
In Equinelantis, Princess Luna always visit her father when she had time ever since her separation with him.
At Equinelantis, Queen Starshine gave birth to Luna. When Luna turns 2-years-old in pony years, she died of cancer. But ever since Starshine became a spirit, she speaks to her family sometimes.
Princess Luna was always loving to hang out with her grandfather, Emperor Lunarlight she and Princess Celestia were foals. Ever since Lunarlight's death, he's always with them in spirit.
When Luna and Celestia were fillies, they've always loved their grandmother, Empress Moonbeam. And ever since her greatest sacrifice for Equinelantis, Boombeam's spirit will live with her family forever.
Princess Solarna was a teenager and the eldest daughter of Princess Luna. Despite her solar eclipse passion was different from her mother, Luna still loved Solarna no matter what. She even needs Solarna's help with Prince Isamu.
Princess Sharon has always been a fine niece to Princess Luna ever since Princess Celestia raised her.
Prince Indy and Princess AnnaEdit
Right after Princess Celestia gave birth to Prince Indy and Princess Anna, Princess Luna was rejoiced to meet her newborn nephew and niece, especially with Sharon as the big sister.
- Luna was married to Hiro in A Night to Remember.
- Luna was the crew chief for Yuna and Snowdrop.