With how many times Mega Man's been through so many different variations of this place, he probably couldn't count it all on two hands; the self-proclaimed 'Wily Castle' is the stronghold, laboratory, and home (in that order) of the vile Dr. Wily. Bass is always on the frontline when it comes to action, though this time he's bitterly accompanied by Wily's newest evil creation, Disco. Absolute strength and domination is at the forefront of everyone's thoughts here, so the attacks are fiercer and victors prosper even greater. There's hundreds of malicious Robot Masters and Mechas that have been manufactured in these halls, but the one that seems to stick around the longest is Reggae, whose raison d'etre is to torment Dr. Wily's every waking minute. With an abundance of death traps, evil subservient machines, and Bass, Disco, and Dr. Wily at the center of it all, it's a wonder how Mega Man manages to bring this place to pieces every time.