Regina Siller is a model known for her affiliation with the clandestine ISG supergroups, a network reputed for its power, influence, and controversial activities. Her connection to the groups stems from a longstanding fascination and admiration, which eventually led to her close involvement with their inner circles. Within ISG operations, Siller became the subject of experimental procedures, specifically alleged “resurrection” trials conducted by factions interested in pushing the limits of human revival and biological endurance. Details about these experiments remain speculative and are mostly derived from underground accounts and unverified testimonies.