Delta

Delta (デルタ) (Δέλτα), formerly known as Sarah (サラ), is a member of Shadow Garden. Being its fourth and one of the Seven Shades, she is extremely loyal to her master after she witnessed his strength and was saved from Demon Possession.

Appearance
Delta is a beautiful teenager with long black hair and with large dog ear sporting on top of her head. She sports purple eyes. Her body is a slender build with an ample bosom.

Her attire comprises of the customary slime bodysuit with black and bronze coloring.

Personality
Much like the common personality of any Beastkin, Delta is often describe to be a muscle head. She has shown to be an excitable if quite immature akin to that a child. She also refers to herself in third person. Delta deeply loves her master, even going as far to hug him in every occasion they meet. She also doesn't mind mating with him and share him with her fellow Shadow Garden. As for her interactions with Gamma, the two have a rivalry ever since they were children but they nonetheless care for one another.

As a member of Shadow Garden, Delta loves fighting. She has shown to be merciless and sadistic towards her enemies, leaving none of them alive. This makes her dangerous that she will go overboard on her attacks that can unnerve her master and her comrades. This trait came from her life as a Beastkin who will follow the strongest life form, regarding them as their leader. Hence, why she had no qualms killing her brother, Ole who she regarded as weak due to her hatred towards her family from her father's betrayal when he attempted to kill her.

Early Childhood
Delta was once a girl named Sarah who was recognized to be the strongest daughter of the chieftain of her tribe. Because her father has about twenty concubines, she has over hundreds of half siblings. If she wasn't born as a girl, her father would have given her the position of the next chieftain. Upon learning that she has Demonic Possession, Delta's father attempted to kill her but Delta was successfully able to hide and escape before meeting with Cid.

Assault on Viscount Olba
Delta and the Seven Shadows assaulted the hideout of Viscount Olba in order to rescue Claire Kagenou. After the Seven Shadows killed all the guards and Shadow eliminated Olba, they rescued Claire and return home. Delta would leave with the Seven Shadows to hunt down the Order of Diabolos.

Kidnapping of Princess Alexia
After Princess Alexia Midgard was kidnapped by the Order of Diabolos, Alpha orders Shadow Garden members stationed in the kingdom, including Delta to attack all known hideouts of their enemies. At one of these locations, Delta savagely slew all the cult members.

Holy Ground Infiltration
Delta was part of Alpha's group in infiltrating the Holy Ground. She then battle Nelson who uses his powers to send an army of clones of himself to finish off Shadow Garden but the Beastkin easily slaughter many of them. Delta later escapes with her team before Cid destroys the Holy Ground.

Mitsugoshi Co vs Great Commerce Alliance
Ordered by Shadow Garden, Delta had out to eliminate targets from the Great Commerce Alliance who had tried to sabotage Mitsugoshi Co. During one of these missions, Delta reunites with Cid and excitedly hugs him to his dismay. Cid, who is in undercover as John Smith, orders Delta to withheld information of this meeting which she complies. The two work together in eliminating assassins with one of them being her older brother, Ole.

In her second meeting with her master, Cid orders her to help eliminate Juggernaut of the Black Tower. She succeeds, presumably cutting off his head and returns to Shadow Garden who were ecstatic to see her, believing that she had been killed. After the Great Commerce Alliance fell and Mitsugoshi Co., Delta was last seen helping Cid dig through the snow. Delta discovers something but Sid left before she could tell him.

Powers & Abilities
In terms of raw destructive power, Delta is second only to the Shadow himself, with the only other person known to have defeated her being Alpha. As a Beastkin, she possesses superhuman strength and speed, which is further augmented by having been trained since young, making her highly effective in killing. In a testament to her strength, she killed Tyrant, one of the Outlaw City's three monarchs, with ease.

Due to being the dog sub-species, Delta also has excellent tracking skills, which the Shadow notes surpass even his own. Her sense of smell is so good that she can easily see through her master's disguises, even when he takes precautions by masking his scent.

Cid Kagenou / Shadow
Upon meeting Cid, Sara was overwhelmed by his power and submitted to him. Ever since then, she became a loyal subordinate to him and would be extremely happy whenever she has the chance to visit him. During the Mitsugoshi Company vs Great Commerce Alliance arc, Delta proposed to Cid that he should go to her tribe and beat her father and then become a leader with hundreds of concubines.

Alpha
She loyally served Alpha and was frightened whenever Alpha got angry at her. In the past, Delta challenged Alpha for the role of second-in-command only to be defeated severely by the Elf.

Gamma
Delta always quarreled with Gamma due to the latter's lack of combat abilities.

Zeta
In the anime, Delta and Zeta do not get along. Despite both being Beastkin Wolfs, or perhaps because of it, the two constantly bicker, with Zelta having given Delta the insulting nicknamed of "Doggie".

Olé
Even though Olé was her older brother, Delta hardly knew him. She became deeply enraged at Olé's cowardice leading her to kill him without hesitation. She even declared that she doesn't need a weak brother.

Trivia

 * As the most physically gifted of the Seven Shades, Delta is the most destructive, sadistic and brutal due to her lack of sense and self-control.