Cosmina

Cosmina is one of the members of the Empire's Secret Police Wild Hunt. Cosmina is female Singer fully equipped with a Microphone operating as her Teigu.It was revealed by Dorothea that she was regarded as a Witch in the Western Country because people feared her voice as people believed it can manipulate people.This ignorancy resulted in Cosmina's home being set on fire, killing her Parents.Cosmina survived the Fire miracously and was turned horribly insane by the incident.

Personality
Cosmina seems to love putting on a show for her opponents while killing them as even while doing so to the Death Row Prisoners she to some extend was behaving like she was on a stage and seems to either be oblivious to what she does or utterly heartless as she smiled brightly after killing the aforementioned people.

She is severely perverted as when Enshin kicked her for not "Sharing Enemies to kill", she had no problem with him seeing her underwear while telling him she'll take care of him later and was shown multiple times to not care the slightest if her underwear shows..During the Incident of the Umatora Theater, she took part in the mass rape but only doing so to "Pretty Boys" showing she's not only as twisted as her comrades but quite shallow to boot.

Her twisted perversion and sex obsession eventually lead to her downfall as instead of focusing on battle and her surroundings, she was more interested in not missing out her chance to rape a severely injured Ran (almost drooling over it) before he dies causing her to get shot by Mein.

While it has not been revealed yet what she was like before, Cosmina only became this insane after her house was set on Fire leading to the deaths of her Parents.

Bio
Cosmina is first seen when the Wild Hunt were introduced. She displays her Teigu's power which is a microphone able to produce devastating soundwaves. Throughout the Wild Hunt's rein of terror, in an investigation at a theatre, Cosmina claims to "take all the pretty boys", or in other words, to rape them.

She and the other Wild Hunt members were terrorizing the streets of the Capital, butchering down the Imperial Fist and sexually assaulting them much to the dismay of Wave who became Witness to Wild Hunt having hanged their victims beaten bodies upside down and naked in the middle of the streets for the sake of "Fun".

When Ran visits the Wild Hunt base, she greets and flirts with him wanting to "play". After Ran lures out Champ with a simple but effective lie, Cosmina and Enshin are heading out after hearing Champ's painful screams resulting from the torture received by Ran.

The two engage in combat with Kurome and her Dolls making quick work of them with Cosmina easily killing two Danger Beasts using her Great Tremor and the two Wild Hunt members end up pincering Kurome nearly killing her if not for Ran.

Directly after, Champ had returned using a Combination of his Storm and Explosion Orb resulting in Ran being fatally injured, yet still capable of killing Champ by repelling his Fire Orb. After Champ was killed, Cosmina realized Ran has not much time left to live, trying to use his weak state to rape him ultimately falling victim to her own Perversion as by focusing on Ran, she lost sight of battle which resulted in her being shot by Mein.

Some time later she was picked up by Dorothea who found her close to death, and in order for her to heal was put in a cryogenic tube at the newly established Workshop in the Capital.However, because she was so close to death, her survival left her with brain damages which according to Shura will leave her "retarded".

Equipment and Skills
Though not seen physically strong or good at combat, when killing the Death Row Prisoners; Cosmina portrayed a devastating power of ultra-sonic Soundwaves, pulverizing and destroying the bones of her victims when she sang into her Microphone. A teigu called Great tremor: Heavy pressure. This can be blocked by the person covering their ears, as seen by Kurome.

According to Shura, her voice was capable of manipulating people. This was also what lead people to brand her as a witch and appears to possess great Vitality which even greatly surprised Dorothea, a seasoned Alchemist.