Delta

- Delta's appearance underneath the Kara cloak. - Delta's appearance with the cloak. - Delta after being remodeled in Konoha. 1/3 Delta has long, curly, blonde hair and light purple eyes with yellow eye-shadow, with vertical lines running through her pupils and irides. She has a green tattoo (black in the anime) of the Roman numeral "I" in the centre of her forehead and wears yellow lipstick and matching nail polish on her fingernails and toe nails. She wears a black cloak with a pink inner colour, a turquoise outfit with an exposed heart shape cut-out on her back, triangle shape cut-out bishop sleeves, a triangle shape cut-out on her chest, white wrist cuffs, pink triangle earrings, with black and red striped tights, and long white high-heeled shinobi sandals. In the manga, Delta's outfit was embroidered with pink studs in the centre. After being reprogrammed as an ally of Konoha, the symbol on her forehead was altered to resemble cross between a triangle and Konoha's symbol, and she was given new attire consisting of a turquoise tube mini dress, white fingerless evening gloves, and a collared capelet fastened with a pink triangular clasp with a spiral design resembling Konoha's symbol, along with her familiar black and red striped striped tights, triangle earrings, and white long high-heeled sandals.

When Akebi contracted an incurable disease, rather than trying to develop a treatment, her father Amado decided to clone her, preserving her brain and creating a backup of her memories, which he implanted in the clone. Despite the clone having all of Akebi's memories, her personality was entirely different. Amado repeated the process several times, but never succeeded in recreating Akebi's personality. Akebi's clones came to be known as Delta, and joined Kara along Amado when Jigen promised him to resurrect Akebi if he helped him achieve his goal. In the anime, Delta was searching for children in a village for Kara to use as candidates as Jigen's vessel when she came across Kawaki's blood-soaked cloth after the latter was bullied by other children. Afterwards, Jigen would later buy him off from his abusive father.