Not sure I consider it dark - more like justice. In SIMS 2, Nervous Subject kills Loki Beaker, using the same machines they tortured him in, and brings him back as a zombie slave. He gets Circe Beaker pregnant and kills her after the baby is born and brings her back as a zombie slave. He has Grim Reaper babies and Grim is supposedly his father. He gets a makeover using the cosmetic surgery machine and marries the Bella of Strangetown and has more babies and lives a very happy life, though still conflicted about his mother, Olive Spector.