Mega Man and Bass begin a final confrontation with Dr. Wily in his newly regained laboratory . When Wily is beaten , Bass demand to know why he deceived him . Wily explain that he created King simply to test Bass ' abilities . Wily show him written plans for making a newer version of King to join with Bass in this venture , promising that the two would be invincible together . Proto Man appear and immediately destroy these plans . Wily then demand Bass to destroy Proto Man , but Bass is unsure . It was then Proto Man tell Bass that although he is a strong robot of free will , he can never defeat his rival because he have nothing for which to fight . Bass doesn 't care and forces Proto Man to leave , saying that he will still destroy Mega Man to prove his cause . Mega Man return home where his sister Roll present him a letter from King , who have somehow escaped the destruction of his castle . King wish to atone for his own crimes against humans and hopes for them to be friends if they was to meet in the future .