I had an idea to expand of The Twins recently. The group of people who reanimate the suicides are part of Department Thirty-Six, who are notable for such technological advances as the dimension rift, the perpetual engine, and of course, the benefit denouncer, the machine that can wake the dead.
Thirty-Six has had some problems, most notably including the fact that the early B.D. experiments only produced wretched little creatures that are barely considerable to be alive. The second, and most infamous, is the van Kraussberg experiment, on the late Doctor Erich van Kraussberg. Nobody knows all the details, but the reanimated doctor seemed to be more out of proportion than te other experiments.
A brief bio: Erich van Kraussberg was in charge of the initial experiments, and after a while, he was the one who discovered why the early experiments failed: the corpses only died from natural causes. He decided that the emotional extremes that suicidal people were at at time of death would be ideal, so they experimented on Numbers 222 and 223, two incestuous brothers who committed suicide together. They were reanimated, and they became the first successful reanimations. However, they were somehow stretched out of proportion, and they became twisted nymphomaniacs [NOTE: I used the word evil in the original context. The Twins are not evil. They are amoral, and don't understand what they are doing is wrong.], the process of reanimation emphasizing their emotional and physical extremities.
Kraussberg committed suicide after The Twins staged a mass-murder in a shopping mall. He was reanimated, and escaped Department Thirty-Six a week later. Many disasters are attributed to the Kraussberg reanimation (Experiment 345), along with later projects including Experiments 653, 562, and 710.
Department Thirty-Six was shut down after an investigation into its new director, Doctor Melissa Kraussberg (Erich's daughter)'s mysterious murder. The murder was deemed a suicide. Interestingly, though, many experiments were found missing, and some were found dead in the surrounding area.
As for the experiments themselves, most of them were killed en masse by firing squads, even the ones displaying intelligence.
Escaped experiments are called the Kraussberg Freaks, and the most dangerous are often reffered to as the Kraussberg family legacy. This includes Experiment 345, 222, and 223, who show no sign of aging.