She is Shirō Emiya's servant, an agile and powerful warrior. Saber is loyal, independent, and reserved; she appears cold, but is actually suppressing her emotions to focus on her goals. Her class is considered the "Most Outstanding", with excellent ratings in all categories. Because her master cannot effectively provide her with mana, she minimizes her activity to preserve what she has. Saber is bewildered by Shirō's "protective" tendencies, and believes his erratic and reckless behavior jeopardize her chances of winning the Holy Grail War.