Clint Barton was ridden with sorrow and rage after his wife and his three children were all killed during the Snap. Angry that his family had died while there were criminals who had survived, Barton deemed that they did not deserve to live, and decided to kill criminals himself. After five years of his murderous vigilantism, Barton made his way to Mexico to eliminate the Mexican Cartel members who survived the Snap.
Ronin arrived at Juárez, Mexico, continuing his mission to kill all criminals who survived the Snap, targeting the Mexican Cartel. Ronin used his superior skills as an assassin to infiltrate their base of operations and began to slaughter all the members ruthlessly and quickly, to the point that the Cartel could not even get the chance to draw their weapons. Ronin would then leave a horrendous scene of dead bodies that would be found by the federales.
James Rhodes then reported his findings on the massacre to Natasha Romanoff, stating that he might not even want to find Clint Barton, scared of who their former teammate had become. However, Romanoff asked Rhodes could keep looking for Barton, which he agreed to. Rhodes would eventually track him down to Tokyo, Japan, where Barton planned to, and successfully killed all the members of a Yakuza faction led by Akihiko.