In the Shadow Universe, Thragg stands as one of the leading enforcers of the ISG (Imperial Shadow Guard) — a militarized coalition formed to combat planetary-scale threats and rival superpowered factions that defy Viltrumite order. Alongside Omni-Man, Conquest, and Anissa, he wages war across galaxies, crushing insurgent worlds and neutralizing cosmic anomalies that endanger the Dominion’s grip on reality. In this darker continuum, moral boundaries have collapsed — the ISG acts as both protector and conqueror, erasing anything that challenges their reign. Following the fall of Mark Grayson (Invincible) and Atom Eve, who were executed by Conquest after their ideals clashed with the new Shadow Regime, Thragg became absolute within.