Deispider

Deispider (デースパイダー) is a spider enemy from Mega Man 9 that appears in the stages of Concrete Man and Jewel Man. It appears on ceilings, falling down and starting to jump around madly toward Mega Man when he gets close to it. It alternates between small and long jumps.

Deispiders make a return in Mega Man 10 where they are smaller, but move around and jump faster.