This is the demon who was struck down

Necrosis

“I hate the world, more precise I hate humans, and they ridicule me for being a half-demon, but I don’t care what they think, I’m nearly invincible, why should I need the comfort of humans anyway?”

“I want power, I need to kill that boy, the ignorance of him claiming to be stronger than I, well, I got something for him, a sword in his stomach, and weirdly, some humans respect him!!"

“I’ll conquer everything, I’ll kill anyone in my way, and the devil can’t take me, why should he or any other demon have the strength to take me?”

“My name is Necrosis, I’m a half demon, I am famous for my mental and psychic powers, I was in a century long battle with Satan and Cerberus, and I should be king of all demons; why did that boy come after my victory?"

"I have a limited amount of energy, but my victims never saw it, I deserve that title, I was without riches, but I was born with unmatched powers, hell I can take an army of angels.

“That bastard struck me down with a sword in my back, damn that hurt, but I’ll get my revenge and take the throne, He will regret the day he messed with...

“Necrosis the Eternal!!”