Hanzo is a playable hero in Overwatch, Blizzard's team-based shooter released in 2016: a Japanese master archer and former clan heir whose calm, honour-bound persona runs through his voice lines. 'Step into the dojo!' is one of his in-game lines, invoking the martial-arts training hall as a challenge to face him. As Overwatch clips and memes spread across YouTube and TikTok, the line escaped the game and became a standalone meme drop, used to announce duels, sparring footage and any showdown framed as a test of skill.