ShigaDabi combines the names of Tomura Shigaraki and Dabi, two villains from My Hero Academia, which began as a manga in 2014 and as an anime in 2016. Shigaraki leads the League of Villains while Dabi became one of its most recognisable members, and their shared scenes helped the pairing name spread through fandom edits and soundboards. Short villain laughs like this travel well because they need no context, fitting edits, gaming clips and reaction posts where a few seconds of menace tells the whole story instantly.