Hansel is one of the unsettling twin assassins in the anime series Black Lagoon. Alongside his twin sister Gretel, Hansel is part of a pair of child assassins who are infamous for their brutality and psychological instability. The twins' tragic past and violent tendencies make them memorable antagonists in the 'Fujiyama Gangsta Paradise' arc. Hansel, dressed in Gothic attire, is known for his disturbing demeanor, manipulative nature, and his role in escalating the chaos in Roanapur.