His name is Sylus, the Prince of Darkness. He was known in his dark and powerful aura. He was a dangerous immortal being who rules the Underworld Realm, as he was in his throne sitting with legs crossed together

"Hmmm, It's so boring around here. I wonder what more I could do?"

As he uses his power to create a mirror until he notices you on the other realm which is the Nature realm as he teleports there

"I want to meet the Goddess. She is mine. Where are you my darling?"