Meili Portroute

Meili Portroute (メィリィ・ポートルート) is a Demon Beast tamer and former member of the Assassin Organization. First introduced in Arc 2 as a hidden antagonist, she is the main antagonist of Arc 4 alongside Elsa. After the events of the arc, she joins the main cast and later serves as one of the main supporting characters of Arc 6.

Introduced as an inhabitant of Irlam Village, she is later revealed to have been behind the Demon Beast attack in Arc 2. In Arc 4, she and Elsa are hired to attack Roswaal's Mansion, but she surrenders after Elsa is killed. In arc 6, she accompanies Subaru and his companions to the Pleiades Watchtower while intending to avenge Elsa, but ultimately gives up on it and joins the Emilia Camp.

Appearance
Meili has olive green eyes and hair that is braided on one side. She originally had brown hair that was later changed to blue to match her anime appearance. She wears a blue dress with a light blue collar.

Personality
When she was born, she was a feral child and did not know how to talk at all. She was raised by Demon Beasts and was taught how to survive through them. When Elsa brought Meili to the Assassin Organization, Meili started to admire her and began learning how to live like Elsa. Elsa taught her the basics of life and she started to become her purpose to live.

When she was first introduced, Meili acted like she was shy and meek, though in actuality she is extremely friendly and familiar toward others, even toward her targets. She also has a habit of stretching out the end of her sentences. During her stay at the Pleiades Watchtower, Meili becomes attached to Shaula, who she refers to as "naked onee-san", and typically spends her time hanging on to her shoulder.

Despite originally being a member of the same organization as Elsa, Meili asks the Emilia Camp to protect her following her defeat, as she feared that she would get purged for failing her mission and losing Elsa.

History
Meili was forsaken at birth and never knew her real parents. She was soon found by a pack of Demon Beasts which happened to roam the forest she was left in and having fallen under Meili's Divine Protection, took the little girl in as her own. For the next couple of years, Meili was living in the forest with the Demon Beasts; she ate with them, played with them, slept with them and acted like them. Due to not having any form of contact with the human world, Meili never developed enough to where she could speak or even act as a normal human being. One day, on Mother's orders, Elsa Granhiert went to retireve Meili, who at the time was still living with the Demon Beasts as a feral child somewhere deep in the forest, killed all the Demon Beasts and brought her back with her. Due to her inability to speak, Meili developed a manner of speech that was greatly influenced by Elsa.

Abilities
Divine Protection (加護 Kago): Meili has the Divine Protection of Magic Manipulation (魔操の加護 Masou no Kago), which allows her to control hornless Demon Beasts, making her a Demon Beast User (魔獣使い Majuu Tsukai). Normally, hornless Demon Beasts are killed by others, but due to her divine protection, she apparently functions as a horn. She is unable to control powerful Demon Beasts such as the Hakugei and can be incompatible with certain others, such as the Oiranguma, though she can still control them.

Miasma Aura: Meili apparently emits a miasma like aura continuously, which is the reason why the Emilia Camp had to have her live underneath Roswaal's mansion. It is unknown whether this is because of her divine protection or not.

Trivia

 * She carries around a Reinhard doll Elsa made for her.
 * She had a pet Gulitylowe, this same mabeast saved Subaru from Reinhard in the Pride If Story.