Middle - Saber: Normal King Arthur, wielding Excalibur (The Sword given by the Lady of the Lake).

Left - Saber Lily: Younger King Arthur, wielding Caliburn (The Sword in the Stone).

Right - Saber Alter: Corrupted King Arthur, wielding Excalibur Morgan.

Bottom - Red Saber: Nero Claudius Caesar Augustus Germanicus, not King Arthur at all. Don't know the name of her sword.



Despite being called "Red Saber," Nero is not to be confused with "Saber of Red," who is Mordred, King Arthur's "son" (homunculus clone).





There are also other Sabers. Saber of Black, I believe it was, is Siegfried, a Dragon Slayer wielding a blade named Balmung... Among many, many others. Such as Saber Santa, which is King Arthur but Christmas themed.



Confusing, right?