According to Star and Marco's Guide to Mastering Every Dimension, the Pony Heads live in and rule the Cloud Kingdom in the skies of Mewni just below the edge of outer space. Unlike the matrilineal Butterfly family, in which the throne is handed down from the queen to her firstborn daughter, the Pony Head family is patrilineal: the throne is handed down from the king to his firstborn son.
King and Queen Pony Head tried to have a boy, but instead ended up with thirteen girls. After their twelfth daughter was born, the firstborn, Lilacia Pony Head, was chosen to be her father's heir to the throne, and her title became "Princess Pony Head".
In "Ponymonium", the Pony Heads appear hosting a dinner at their castle attended by Star Butterfly. According to Pony Head, her sisters frequently plot to thwart her claim to the throne and argue over who will inherit it.
|Name|| First appearance/|
|Image||Name|| First appearance/|
|King Pony Head||Party With a Pony||Lilacia Pony Head||Party With a Pony|
|Azniss Pony Head||Ponymonium||Angel Pony Head||Ponymonium|
|Khrysthalle Pony Head||Ponymonium||Jan-Jan Pony Head||Ponymonium|
|Pamanda Pony Head||Ponymonium||Shonda Pony Head||Ponymonium|
|Shinda Pony Head||Ponymonium||Hornanne Pony Head||Ponymonium|
|Teta Pony Head||Ponymonium||Chezna Pony Head||I'm from Another Dimension|
|Whistine Pony Head||Ponymonium||Pranciss Pony Head||Ponymonium|
- Theme Song (season 3)