There is no question that across six seasons, My Hero Academia has delivered memorable heroes and villains. Tomura Shigaraki, however, is not merely a villain; he's the defining exploration of villainy itself. In the world of anime, characters often exist within archetypes and tropes. Shigaraki's journey, on the other hand, breaks the mold. His childhood torment leads to his eventual embodiment of unhinged evil, and as such is filled with insights into the complexities of human nature, morality, and the gray area in between. Shigaraki is a stand-out among the many villains that cross the U.A. students' path.
Source:https://www.cbr.com/my-hero-academia-shigaraki-villain-perfect/