Cree

Cree was an Upper level Demon who went after Madame Theresa and Lydia and they blinded him. Only Gypsie magic (supposedly) could lift the curse. When Cree's son, Orin took Lydia's eyes and gave it to Cree he obtained the power of Optical Thermodynamics. He was vanqished by the same spell that the Charmed ones used to vanquish the Source but they tweeked it so that it would call upon the power of the Nickoli Gypsies.