Skull Walker (スカルウォーカー,Sukaru Wōkā?) is an enemy in Mega Man 6. 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.