Ratten

Background
Her community is Rattenfänger, named after her.

Appearance
She has short blonde hair with long bangs. Her clothing is a white cape with matchig under-garments. She wears white heeled shoes and a white hat. Her clothes are lined with purple. She has elf like ears, blue eyes and fair skin colour. She has a thin, curvy body.

Personality
Although she already knew that she was going to lose, she complied with Asuka's wish and battled with all her might till the end of her life.

Relationships
Weser - She works together with him. They were both shown in the OP.

Black Percher - Ratten works for her along with Weser.

Gift
Flute: Though unknown if the flute itself is a gift Ratten demonstrated to control monsters and humans a-like via by playing music