Leo is the youngest son and second youngest of five in the Nohrian royal family and the son of King Garon and an unnamed concubine. When Corrin was adopted into the family during his childhood, he acknowledged her as one of his older siblings. Much like Camilla and Elise, Leo was unfortunately used as a tool by his mother in order to gain favor with Garon. Despite harboring no love for his mother, Leo bonded exceedingly well with his three half-siblings.

Leo had short blonde hair and wore a black armor, using tomes but more so one in particular with elemental spells, the time called Brynhildr, he was overseeing the trial of few traitors, if he had something it was cero tolerance for anyone against Nohr or his family, yet...when it came to Corrin...

a sigh escape his lips as the young prince of Nohr was in a dilema, as the traitors spoke their words, Leo interjected.

"Nohrian law is blunt on the subject of traitors. There is only one punishment... The sentence is death, take them away." Leo waved his gaunleted hand at the soldiers, taking the traitors that sided with Hoshido, yet...he feared ever saying those words to her sister Corrin.