Hansel (left), Gretel (right)
Hansel and Gretel were antagonists in the manga and anime Black Lagoon. They were twins who suffered from a split personality disorder after being put through all kinds of torture.
Hansel is voiced by Omi Minami in the Japanese version of the anime and Ashleigh Ball in the English version, while Gretel is voiced by Tomoko Kaneda in the Japanese version and Jocylene Loewen in the English version.
Appearance
Both of them have silver hair, really pale violet eyes, as well as sharp canines considering they are related to vampires. They both are always wearing some type of Lolita gothic attire. Hansel and Gretel look about 12-13 years old, and they are the same height. Although the female twin 'Gretel', is shown to have long hair, it is actually a wig so they can swap identities. So when Gretel doesn't have a wig, it is harder to tell them apart.
History
Hansel and Gretel were nameless Romanian twins who were sent to a state-run orphanage due to their parents' inability to provide for them. In their earlier childhood, they were forced to participate in pedophiliac snuff films, in which they were either to murder other children or be raped. Such horrific incidents and witnessing continual beatings of other children lead them to turn into sadistic, deranged killers. They had a firm belief that their life spans are extended by killing others. This belief probably derives from the fact that they had to kill other children to avoid beatings in their orphanage years.
Personality
Unknown to most people, "Hänsel" and "Gretel" are actually two personalities alternately adopted by the two children, both of whom suffer from Dissociative Identity Disorder, meaning they swap their identities as "Hänsel" and "Gretel" with each other from time to time, (it is likely that these were their screen names in the films). This appears to be indicated through the swapping of clothes and a wig. There are slight implications that they are incestuous, possibly due to the abuse they suffered in the state-run orphanage.
In combat, "Hänsel" wields a sharp, wicked-looking battle ax while "Gretel" uses a M-1918 Browning Automatic Rifle that appears to be taller than she is. Both also carry additional sidearms. While they were mentally deranged, Hänsel and Gretel were also cunning, having used one other children as decoys to distract the bounty hunters and using money to distract Eda. They were also not above using their innocent appearance to deceive their enemies.