[2] Tensai Okamura found early designs unacceptable; until his image of the characters matched Iwahara's, the pictures were redrawn many times.
Komori said that when he draws female characters, he pays special attention to the line connecting her buttocks and legs.
At the beginning of the series, The Syndicate (組織, Soshiki) is introduced as a mysterious underground organization with no apparent objective.
In the later course of the show, it is revealed that The Syndicate is in fact merely another façade for a global organization in control of PANDORA, that declares to be looking for stabilizing the world order and destroying Hell's Gate.
The real-life MPD HQ at Kasumigaseki is now within the restricted area of the Hell's Gate in the Darker than Black universe.
She is murdered by Genma by putting her through ME Squeezer and probably also by torturing her in the process, as her body is left severely beaten, unlike Pavlichenko's.
It is revealed that the Syndicate has sway with the organization and has plans to commit genocide against all Contractors by eliminating Hell's Gate.
Following the loss of the dominant superpower position, the CIA strives to restore the United States to her former glory by engaging in various international subvert operations, even as far as going for an all-out invasion on Tokyo at the end of the Season 2.
The FSB is the domestic security agency of Russian homeland, acting similarly to the FBI in United States.
[28][25] Maxibe Gee from the University of York compared the cast of the anime with the handling noir series or films such as Do Androids Dream of Electric Sheep?
[32][33] Tomoko Kawakami's performance as Amber was pointed out as "solid" especially since it was the actress' final work before her death,[25] while Jason Liebrecht's Hei was commented to be "a schizophrenic variation" of Syaoran from Tsubasa: Reservoir Chronicle among other appealing English actors.
[34] Anime News Network claimed that both Japanese and English voice actors managed to make lipsynch be properly matched regardless of language.