In 2025, the Immortal Shadow Group (ISG) reached a historic turning point with the induction of Dean Winchester, the American hunter known for his battles against supernatural entities. Dean’s recruitment was unprecedented, as ISG had traditionally been composed of horror juggernauts and immortal entities rooted in fear, legend, or brutality. However, Dean’s reputation as a strategist, warrior, and survivor could not be ignored. His presence marked the first time ISG had turned its conflict inward. While they had never lost a war against external opposition, Dean’s inclusion created a new phenomenon: ISG vs. ISG battles, often staged as tests of strength, honor, or rivalry rather than outright attempts at annihilation.