The black ninjas from Ninja Gaiden who throw the explosive darts at you.
YEAAAAAAAAAAAAARGH!!!! those were a ridiculous pain in the anus!! I got constantly raped by them on my first run.
BTW, their real name is Black Spider Ninjas, in case anyone wondered
__________________
Random quote: "In 80 movies I've died 24 times - electrocuted twice, hanged twice. I've been knifed, committed suicide, died in accidents, but never a natural death. Anyway, I don't think death is natural."