Princess Earthina is the sister of Princess Celestia and Princess Luna. She is very smart and loves books. She hasn't got a Cutie Mark, since Nightmare Moon (evil Luna) cast a spell so she couldn't get a Cutie Mark.
Early LifeEditAs a filly, Earthina was just a normal pony, until Princess Celestia cast a spell to make her a princess, this gave her a completely new look. It also gave her a horn and wings.
At the age of 13, Earthina was captured by Nightmare Moon. She was locked in a dark cellar for 10 years. At the age of 23, she was freed by Princess Celestia.