Thread:LeonRaidenYun/@comment-26981368-20150926201654/@comment-25994900-20150927050613

Zel - Most prominent. Zel was one of those that managed to almost disrupt all of reality, he was 3/4's of the way to destroy all of existence and concepts with it, literally dragging all other possibilities, timelines, universes and everything together into one small cramped destructive force. Leon managed to go into the middle of the thing, fight in it before it reached its final form and eliminated Zel and his plans.

Nanashi - Nanashi is a being of nonexistence, in which he naturally was a threat to everything. Leon had to stop him without being consumed by Nanashi's effect. Nanashi would have had the potential of growing in power and literally becoming God of nothing, since he'd erase everything around him in an instant the moment he got powerful enough to do so.

The Seven Omnipotence - When all of these guys combined, they pulled together energy from other universes. (This is where a lot of references were made in the manga.) This is where Leon also was transferred to multiple timelines and alternate dimensions to fight in until he could stop that and defeat The Seven Omnipotence.

The Singularity - Like Leon, The Singularity is a singular being. He couldn't be copied, cloned or anything else. Leon even tried to absorb his energy blasts and only got an explosion to the face. He was a threat like Zel, but instead had used a way to "inherit" Leon's transcendent abilities by connecting with him emotionally and pretended to be Leon's disciple for a long period of time before he went batshit insane and started to weave timelines together, which he almost got to weave in his power the entire Omniverse.

The rest of the enemies are like Hyperverse and below.