Princess Ember

Princess Ember is a female dragon from the Wild Dragon Outlands of the Dragon Lands of Equestria in My Little Pony: Friendship is Magic season six. She is the current Dragon Lord of the Wild Dragon Community, succeeding her father Torch.

Depiction in the series
Princess Ember is introduced in the season six episode Gauntlet of Fire as the daughter of Dragon Lord Torch. When Torch gathers the dragons of Equestria together to compete for the title of new Dragon Lord, Ember expresses a desire to participate, but her father forbids her due to her small size.

Against Torch's wishes, Ember disguises herself in armor and takes part in the Gauntlet of Fire. She nearly goes down in the first leg of the race, but Spike saves her from drowning. Believing that "dragons don't do friends", Ember's views about friendship conflict with Spike's. However, she agrees to partner up with him in order to face the Gauntlet's more daunting obstacles.

After making it through several parts of the race together, Ember and Spike's views about friendship diverge again when he risks his well-being to save Rarity. As such, she ends their partnership and continues on by herself. Near the end of the race, however, she saves Spike from Garble and accepts him as her friend. Spike wins the Gauntlet of Fire, but he quickly passes on the title of Dragon Lord to Ember.

In a final verbal confrontation with her father, Ember declares that there is more to being a leader than size and strength. Torch comes to understand his daughter's sentiment, and Ember is crowned the new Dragon Lord. As part of her new position, Ember establishes friendlier dragon/pony relations through Princess Twilight Sparkle.

Role in the series
Ember is not the ruler of all Dragons, that position being held by King Drakesis, but her family has had a history with Drakesis. Torch was a child bully of Drakesis who competed in several other Gauntlets of Fire trying to be the King of All Dragons instead of him, but was constantly defeated despite Torch growing much larger than him. Ember, since adopting friendship, as well as helping patch up differences between ponies and dragons, has been growing into being a senator despite her age. She even dates the Dragon Prince Prince Draflos.