Parents: Twilight Sparkle, Luna

Other Family: Harmony/Twin Sister, Notus/Pet-Adopted Brother-Thing

Full Name: Prince Artemis Argenti Sparkle

Nicknames: Art, Arty, Sparklepants (Only by ponies that annoy him), Regulus (by Luna)

Cutie Mark Meaning: Astronomy, Controlling the Dreamscape

Gender/Sexuality: Cis Male/Straight

Relationship: Crushing on Key Lime

Fun Facts:
He got his cutie mark when he accidentally caused a star to fall out of the sky, eventually hatching into Notus.
He is known as being grumpy by many, however this is only true BEFORE he has had his coffee.
Luna calls him Regulus- translating to Little Prince in ancient ponish- because as a colt, he loved the idea of one day becoming king of Equestria, though now he really couldn't care less.