Skull Walker (スカルウォーカー Sukaru Wōkā) is an enemy in Mega Man 6 that resembles a spider with a skull. It walks about and looks around the area, and if a barrier is in the way, it will leap to try and clear it (if it can). They appear in Knight Man's Stage, Tomahawk Man's Stage, and in Mr. X's Stage 1 and 2.
SW-525 is a modified Skull Walker that appears in some key areas of Mega Man 6. They walk across the ceiling or floor, and then after a while stop and self-destruct. They appear in Knight Man's stage and in Mr. X's Stage 4.
Enemies similar to Skull Walker:
Enemies similar to SW-525: