Talk:Daemon God/@comment-36209226-20190201152830

"Guy dove deeper down now that his pride has been shattered once. And attained ultimate skill『Pride King Lucifer』. A Demon Lord who had the power to rival God was born at this moment. 「Yeah, I leave it to you.」 Hearing Guy’s reply, “Stellar Dragon King” Veldanava chuckled happily. This was the moment, that Guy and Veldanava accepted each other as friends."

Guy's Prideful King Lucifer allows him to copy any Skill he witnesses and therefore gives him the power that rivals God. The issue is that Guy's body cannot contain the power necessary to rival Veldanava (Veldanave reached his limit with the Turn Null in that he could only maintain enough power to create the world, whereas Rimuru's Imaginary Space/Imaginary Room had unlimited space and could hold unlimited energy and could, therefore, create countless worlds).

However, he was able to fight Velzard for three days and three nights and "laughed it off."

I think Guy might be a species independent of Demon King and Demon God, as he also is equal to a True Dragon's strength, as well as a Demi God as in his battle with Chloe.