Assuming your referring to Artoria. She’s King Arthur in the Fate/Stay Night timeline (the best way I can name it even though it includes apo/zero) but in the Fate/Prototype timeline King Arthur is King Arthur (as in a dude).
Assuming your referring to Artoria. She’s King Arthur in the Fate/Stay Night timeline (the best way I can name it even though it includes apo/zero) but in the Fate/Prototype timeline King Arthur is King Arthur (as in a dude).