The Sisters are another trinitarian god set of Blackbloom, in this case acting as muses of Invention, each controlling an aspect in the forms of Imagination, Need and Luck. The Sisters are named Koreth, Liam and Perena. Which one controls which aspect is as follows: Koreth wields power over Luck, her sister Liam holds sway over Imagination and Perena controls Need.

When they were worshipped the triple goddesses would grant amazing discoveries and fantastic knowledge to their favored souls. As with all the deities of Blackbloom, however, they have fallen out of favor.

As with some of the other gods they have taken to twisting their gifts and talents, now granting mad inventiveness in magic and weapons to a chosen few, speeding the world toward it's own destruction.