Saber is one of the seven normal Servant classes summoned for the Holy Grail War. Servants placed within this class are agile and powerful melee warriors and it is commonly assumed to be the best class overall, with high ratings in all categories. It is one of the three Knight classes, together with Lancer and Archer, and also possesses the Riding skill like the Rider class.
She is only one known Saber summoned in Holy Grail Wars of Fuyuki, who is an incarnation of King Arthur, dubbed Arturia Pendragon. She had different Masters following the two known summonings of her in the Fourth and Fifth Wars:
- Emiya Kiritsugu in Fate/Zero
- Emiya Shirou in Fate/Stay Night (Fate , Unlimited Blade Works, Heaven's Feel)
- Tohsaka Rin in Fate/Stay Night: Unlimited Blade Works
- Matou Sakura in Fate/stay night (Heaven's Feel)
- Caster at some "bad" routes in the visual novel
- A different Saber makes a quick appearance in Fate/Hollow Ataraxia. The Edelfelt sisters of that time, due to their magical attribute of "twins", manage to summon a dual Saber - two faces of the same Heroic Spirit. The two Sabers appear to have still be counted as one Servant. In Fate/Hollow Ataraxia, their role is played by Saber and Black Saber.
- Also a different Saber (although looking very like the regular one), is the one in Fate/Extra, who is one of three Servants the player may obtain. Another Saber appears as an antagonist.