Corrin

Princess of Nohr

 Corrin is a playable character in the video game Fire Emblem Fates and is the protagonist of the game. Since Corrin is an avatar, they can be customized by the player. 

Corrin is a member of the royal families of both Hoshido and Nohr, they are integral to the plot of the story as the game is based on decisions, Corrin starts out as a Nohr Prince/Princess.

Corrin is the child of Mikoto and possibly King Sumeragi of Hoshido, they are the younger half-sibling of Ryoma and Hinoka and the older half-sibling of Takumi and Sakura. As proof of their royal blood, Corrin carries the blood of the first dragons which not only allows them to transform into a dragon but also allows them to tap into dragon veins.

King Garon of Nohr set up a gamble between himself, Sumeragi and Corrin however it was a trap and Sumeragi was killed by Garon which resulted in the kidnapping of Corrin. Corrin was living inside of the Northern Fortress in Nohr for 15 years. They were adopted by King Garon which made the royal children, Xander, Camilla, Leo and Elise their adopted siblings. Corrin's retainers are Gunter, Jakob, Felicia, Flora and Lillith.