Hänsel and Gretel (Black Lagoon)

"You be sora mea (Romanian, literally, "my sister") for a while"

- "Gretel", about the switch personas with her brother

"Hansel and Gretel", also known as "The Vampire Twins" are secondary antagonists of the anime Black Lagoon." The twins were orphans born in Romania, where they were kidnapped by an organized crime syndicate and forced to star in snuff films, being forced to murder other children. During this time, they were also abused and raped by their captors. This horrific life caused the children to become sadistic murderers themselves. The twins also believed they could extend their lifespan my murdering others, a belief perhaps stemming from the fact they were under the constant threat of death themselves if they did not murder other children. At some point, the twins escaped captivity, presumably killing their captors, and began to brutally murder those connected to them, eventually finding their way to Roanapur, Thailand, where they successfully kill off all of the ranking members of the Italian mafia in the city, before attacking Sofiya "Balalaika" Pavlovena's Russia Mafia syndicate, Hotel Moscow. After killing on of her men, Balalaika lures one of the twins, "Hansel", into park. He tries to kill her by throwing his axe at her, but is shot by a waiting sniper in the arms and legs. Balalaika then stands over him and watches him bleed to death. "Gretel" nearly escapes with the aid of the Lagoon Company, but the contact that was supposed to be her getaway man shoots her on a bribe from Balalaika.

Both of the twins wear gothic clothing, most notably "Gretel's" gothic lolita-styled dress, and both twins have silver hair and blue eyes. The two twins both have dissociative identity disorder, regularly "trading places", donning each other's outfit and using the other's weapons. They also strongly identify with the vampire motif, consuming the blood of their vanquished enemies and even bathing together in their enemies' blood. It is also suggested that they have an incestuous relationship with each other.