Primella

Primella is a young, white-haired girl who is referred to as the granddaughter of the White Brigade's leader.

[Spoiler] As the story went on towards the final battle, it was learned that she was the pure soul of Zola's, who was found by the White Brigade's leader, which he gave her the body. Her pure soul is so strong that it is said that she can defeat Rudolph. [/Spoiler]