Saber (Fate/Grand Order - Fergus)

Saber (セイバー) is a Saber-class Servant able to be summoned by the Protagonist in the Grand Orders of Fate/Grand Order.

Background
Saber's True Name is Ferugusu makku Roi (フェルグス・マック・ロイ), the king of until being tricked out of his throne by  and the foster-father of Cú Chulainn. He was also a knight of the who took brought Cú Chulainn from his mother  to serve as a soldier for Ulster. Later after Cú Chulainn returned from the land of shadows, Conchobar had Fergus's sons killed "out of lust for young women", causing Fergus to defect to Unlster's enemy. Spurring on queen Medb of Connacht out of hatred for Conchobar, they went to war with Ulster, where he managed to corner Conchobar during the decisive battle. Fergus was prevented from killing Conchobar, and was said to have redirected his rage over it upon three hills, using Caladbolg to blast the tops cleanly off them.

Other appearances
Fergus is mentioned in Lancer's flashback in Fate/hollow ataraxia.

Abilities
Fergus was said to be the pride of the Red Branch Knights. He wielded the sword Caladbolg, said to be Cú Chulainn's natural enemy.

Creation and Conception
B-suke is the character designer for Fergus mac Róich.