Azazel

Azazel (アザゼル Azazeru) was a primordial demon. He was imprisoned by the five powerful tribes of Astronema long ago. However he was released by his comrades using the Dragon Soul and targeted Astronema, before Silver and company arrived. Silver, Nexus, Alpha, Omega, and Xander eventually combined the power of the 5 Totems into one blast that was enough to purify and defeat Azazel once and for all.

He is the main villain of Silver Gaiden: Wrath of the Dragon Soul and was the final antagonist faced by the heroes.