Mothraya
Tako Trash
Cockroach Twins
Cossack Catcher
Square Machine
Metall Daddy
Wily Machine No. 4
The fourth Wily Machine introduces the skull motif from Dr. Wily’s Castle—a trend that continues throughout the rest of the series.
Wily Capsule
Also introduced in Mega Man 4, before becoming a permanent fixture of the series, is the Wily Capsule as the final boss.
