A sadistic octopus emperor, who once ruled an entire kingdom, which has since turned into ashes. After his discovery of the ELEMENTAL ULTIMATE OF DARKNESS, he began his quest of world domination, till his very defeat by a team of great warriors. Thousands of years later, his intentions turn for the worse as he seeks the power of the other elemental ultimates.

Phobos has a very grim, somewhat demonic, almost whispering, echoing voice. He's a very tragic character, so I believe that something like that would be very fitting for him.