Kali is the Indian goddess of destruction. She destroys only to recreate, and what she destroys is sin, ignorance and decay. So she is the ultimate form of justice according to the people in India.
Now, traditionally Kali has only 4 arms. One holding a sword, one holding the decapitated head of a demon, and the other two warding off evil and welcoming her children to safety. I couldn't get that, so 6 it will have to be ^-^
Also no skirt of human arms, and no necklace of human heads XDDD