Shigaraki is a fictional character from the popular manga and anime series My Hero Academia. He is the main antagonist and leader of the League of Villains, known for his destructive abilities and desire to create a world without heroes. Shigaraki has a unique quirk called Decay, which allows him to disintegrate anything he touches. Originally named Tenko Shimura, Shigaraki's backstory reveals a tragic childhood that shaped his villainous path. He is the grandson of All Might's mentor, Gran Torino, and his character explores themes of loss, trauma, and the impact of society on individuals.