Hideo Shigaraki's theme is a dark and menacing composition characterized by eerie and haunting sounds like deep drums, menacing strings, metallic clangs, and screeching noises. The theme starts off slow and ominous, building tension and setting a foreboding tone that reflects Shigaraki's chaotic and unpredictable nature. As the theme progresses, it becomes more frenzied and chaotic, mirroring Shigaraki's destructive tendencies and his enjoyment of causing pain and suffering to others. Throughout the theme, there are hints of a distorted version of Izuku Midoriya's theme, symbolizing Shigaraki's obsession with ruining Midoriya and his intense rivalry with him. Overall, Hideo Shigaraki's theme captures the essence of his sadistic and malevolent character, adding a dark and unsettling atmosphere to his villainous presence.