Lyedja Yasmin da Silva Santos is a Brazilian serial killer and mass killer trained by the ISG Supergroups to have no mercy and to spare no lives with no remorse. The last few years, the groups symbolizes sex and violence and have been worshipped by their diehard fanbases due to operating above the law as well. She is atheist, often wears all black or gray clothing, and her crime list is extensive, including necrophilias, mutilations, tortures, home breakings, dismemberments, spree shootings, etc. A common trait amongst ISG members are liking horror games or movies; They likely resonate with their dark and twisted world views, and may even provide sources of entertainments or inspirations for unapologetic criminal behaviors.