Invisible Dragon Everyone hates him he destroy everything, I mean EVERYTHING He's OP and lonely coz invisible and stuff
The Dungeon Seeker Summoned Slaughterer if a harem is okay (but everyone other than harem hates him): demon king daimaou The Forsaken Hero
So many suggestions with non op mcs, they're not OP if they get their asses beat on a regular basis even if their ability seems cheat like
"It has gotten to the point where if you want to ask for recommendations you need to include a (I already know about Invisible Dragon so don't even try it) tag." He said jokingly.
yeah he's pretty OP, but he can reaches another level in his another form. The Fabulous Form. it's awesome just trust me.
Sorry I tend to forget that tone of voice does not always translate to text, I went ahead and edited by comment to make it seem less hostile.