S.S.N.A.

stands for super secret ninja assasin. they are special ninjas trained to take out 'problem' people. they mark the person with ninjas stars with the intials S.S.N.A. written on them, one star is just a warning but multiple stars means trouble for the person marked, S.S.N.A is a single ninja and prefers to work alone but will form a coalitions with others like themselves.