What are some cool superhero nemesis names?

Some cool superhero nemesis names include "The Shadow Master," a villain who manipulates darkness and fear, and "Crimson Vortex," a powerful foe who controls destructive winds and chaos. Others might be "Iron Phantom," a technologically advanced adversary with a mysterious past, or "Venomous Whisper," a stealthy assassin with toxic abilities. These names evoke intrigue and danger, perfectly capturing the essence of their heroic counterparts.