Suggested by Blake Ultron is one of the tougher Marvel villains around, but he is out of his league against Bass. Bass has the Darkness Overload, which is a blast that could destroy Ultron in a single blow. We also can’t forget the vast difference in their respective speed levels either. Ultron will have a very difficult time keeping up with Bass for even a short while. He’ll eventually be overwhelmed and his own impressive regenerative abilities will not be enough to keep him in the fight. Bass wins.