Behind the agitated King of Knights, Irisviel rebuked her.

As Saber - that is, Artoria - is an incomplete Heroic Spirit, she would not possess the knowledge that surpasses time and space one gains when one has reached the Throne of Heroes. Therefore, she is not aware of that tale tainted by insanity, the legend of "Bluebeard", Baron Gilles de Rais.

- Fate/Zero: Act 5, Part 1