Originally, we assumed that a koloss was a combination of two people into one. That was wrong. Koloss are not the melding of two people, but five, as evidenced by the four spikes needed to make them. Not five bodies, of course, but five souls. Each pair of spikes grants what the kandra would call the Blessing of Potency. However, each spike also distorts the koloss body a little more, making it increasingly inhuman. Such is the cost of Hemalurgy.
