Seliph is voiced by Christian La Monte.

Seliph (Serlis in the official website for Fire Emblem: The Blazing Blade), full name Seliph Baldos Chalphy, is the protagonist of the second generation of Fire Emblem: Genealogy of the Holy War and a non-playable character from Fire Emblem: Thracia 776. He is the son of Sigurd and Deirdre, and was chronologically born in Agustria, between Chapters 2 and 3 in the events of Genealogy of the Holy War. He also appears as a DLC character in Awakening, wherein he was illustrated by Suzuki Rika, the illustrator of the Fire Emblem: The Sacred Stones novels in Japan.

Seliph is the maternal grandson of Kurth and Cigyun, the great-grandson of Azmur, the half-nephew and stepson of Arvis, and the older half-sibling of Julius and Julia. He is also the cousin of Saias. He is known as the Scion of Light by the citizens of the world, a stark contrast to Julius, who is called the Prince of Darkness.

A descendant of Baldur on his father's side and of Heim and Saint Maera on his mother's side, Seliph is also the paternal grandson of Byron, nephew of Ethlyn, the nephew-in-law of Quan, and the first cousin of their children Leif and Altena. Due to the blood of Baldur, he is a distant relative of Oifey. Due to the blood of Heim, he is a distant relative to Linoan.