A.B.A

A.B.A has sunken green eyes and greyish skin. Her attire is strange, as it mainly consists of blood-drenched bandages that cover her body, ankles, right elbow to hand, and neck.

In Isuka and XX, she has vivacious red, neck length hair that covers one of her eyes, typically her right. She wears an offwhite skirt with a studded lower trim and a key acting as the buckle of its brown studded belt. Similarly styled pieces of clothing akin to two pairs of shorts strapped together with red string hang loosely over her chest and back. She wears a brown fingerless glove adorned with a red lock on her left hand, and she wears light gray shoes. A black key sprouts from either side of her head, with the head of the key jutting from her right and the key bit on her left.

In Strive, her hair has lengthened and is dyed green. She wears a white headband to keep it back, though one strand falls over her face. Her outfit remains mostly the same with slight changes along with her bandages being looser. Her top is properly sown together from another pair of pants and now has sleeves, resembling an off-the-shoulder top. Her glove no longer has the red lock and she now wears greenish-gray platform boots. The key through her head is reversed, with the head on her left and the key bit on her right.

A.B.A is a very shy person. Since she lived by herself in seclusion for 10 years, she doesn’t have confidence about anything in the “outside” world. She is an artificial life form and has strong principles by nature, but she is also very frightened of competition at times. Due to her complicated personality, she tries to treat others authoritatively, oftentimes using difficult expressions that no one usually uses. There is no hatred towards others in her heart and she can be just as thoughtful as other human beings. A.B.A finds motivation in Paracelsus, her axe, who she decided to take as a partner years ago. He helps her to act positively, however she still lacks cooperativeness at times. A.B.A is of a possessive nature and very jealous when it comes to Paracelsus; there is nothing but pure love for him in her heart.

Created atop a mountain home named "Frasco", A.B.A is an artificial life-form, or homunculus, the creation of a scientist who lived within Frasco. However, before her 'birth', the aforementioned scientist was taken away by the military, which was planning to use his skills for unknown reasons. When her eyes opened for the first time, A.B.A found herself alone within Frasco, and lived the first 10 years of her life in total isolation.

Escape from Frasco was not impossible. Nevertheless, A.B.A quickly realized that she had no knowledge of how to exist outside of her home. To find relief from her sadness, she began to collect keys of all kinds, as they represented the opening of a bold new world and an escape from imprisonment.

While roaming outside one day, still tired of her isolated life, A.B.A stumbled upon an ancient relic known as "Flament Nagel". It was love at first sight, as the war relic was shaped like a key, A.B.A decided to keep him as her partner; she renamed him "Paracelsus". Her new goal was to acquire an artificial body for her newfound partner.

Paracelsus (Flament) is A.B.A's weapon, who serves somewhat like an axe. She uses blood transfusion packs to temporarily power herself up, labeled "Super Body Fluid" in most artwork. While transformed, she becomes more powerful and begins dripping blood, in addition to losing health by performing actions. In order to regain the spent health, she can use more blood to revert to normal. Her unusual fighting style may be the reason why she is constantly covered in blood-splotched bandages (which also compliments her frail appearance). In her Moroha form, she is powerful enough to pressure even the likes of Slayer. She also incorporates Fire and Lightning magic through her utilization of alchemy and can also manipulate her bandages.

In spite of her appearance, she is incredibly durable. In her Drama CD side story, she survived Slayer's All Dead (though he was holding back tremendously), which sent her flying over the horizon until she landed somewhere miles away, and was relatively unscathed. She also boasts regenerative capabilities as she had her arm torn off in her fight with Slayer and was able to reattach it by merely realigning it to the stump.