Hello guys sorry but i am just gonna add a few because I couldnt include this in the first comment because of it was long da**. But anyways
Spoiler!
Yes the potential beings are yet to become apostle or disaster of destruction due to sejuns interference and of course cuengi is on this list. I am sure you already know why, cuengi is still small and growing and as he continues to eat sejuns crops and food which is filled with enhancements and power it actually caused cuengi to become more powerful than originally speaking. Because of this fenrir, the first apostle of destruction actually fount out that cuengi was the demon of destruction due to its immense. I dont know if cuengi will change because currently sejun is keeping cuengi in check and kind. Well for now.