 After defeating the evil Dr. Wily many times , the robotic hero Mega Man is called into action once again when a powerful being known as King steals the blueprints to the creations of Dr. Wily and Dr. Light in order to create an army for robotic dominance over humans . Having learned of the threat , Mega Man 's rival Bass decides to take matters into his own hands . The game is an action @-@ platformer where the player advances by defeating bosses and acquiring their signature weapons . Mega Man & Bass lets the player choose between either of its title characters , each of which plays differently from the other . 
