Thousands of years ago, Nefarion was a pampered prince who was never taken seriously, even when he was crowned king. He ordered a guild of Spell Punks to create the Mask of Power, which Nefarion used to terrorize Skylands for hundreds of years. During his reign of terror, he enslaved all of Skylands and hunted down the Portal Masters one by one. Before Nefarion could wipe them out, he was defeated, imprisoned in eternal winter along with his kingdom and ending his reign.
Eruptor Meets the Nightmare King
The evil Portal Master, Kaos, was able to go back in time to the era when Nefarion ruled over Skylands and allied himself with the Nightmare King. Posing as Nefarion's slave, Kaos helped expose and capture the last remaining Portal Master, Wizbit, who planned to use a Big Bad Ice Bomb to imprison Nefarion in his ice prison. Once Eruptor, Grim Creeper and Slam Bam were buried alive in a cave-in triggered by Kaos, Nefarion returned to his castle with Wizbit and was presented with the Big Bad Ice Bomb from Kaos and Glumshanks. However, Nefarion had heard the ticking inside the bomb and realized that Kaos was going to freeze him in his own castle, to which the evil Portal Master proudly admitted immediately afterwards.
Refusing to hand over the Mask of Power, Nefarion attacked Kaos, but the clever Portal Master used a spell to summon a multitude of clones of himself to confuse the Nightmare King. Kaos was then able to take the Mask of Power off Nefarion's face, reverting him back to his true form: a squat, childlike boy. During the struggle between the Skyanders and Kaos, Nefarion could only watch as the Mask of Power was shattered into eight pieces and scattered across Skylands by Wizbit. When the Big Bad Ice Bomb was about to go off, Nefarion fled from his castle to escape the incoming explosion. It is unknown what became of him afterwards.