Who is Tomura Shigaraki and what is his quirk?

hello fellow weeb

Tomaura shigaraki is a main antagonist of My Hero Academia. He serves as the archenemy of Izuku Midoriya. He is the leader of the League of Villains, whose overall goal is to become Japan's next greatest villain. Tomura's Quirk allows him to disintegrate whatever he touches with all five fingers. It will take effect whether the target is organic or not. The disintegration spreads quickly and will spread through the victim's whole body if they don't amputate the decaying body part