@boringperson: Proof he was completely omniscient and omnipresent?
Myself, I thought God Batman was supposed to be the all-knowing one. That was why he had Metron's Mobius Chair.
Its the entire story arc of the issue. True Omniscience and Omnipresence necessitate action and remove the possibility of free will... which is the crux of the story.
At the very least, he sees exactly what Batman would be doing in the future/what he was thinking in the past and was shown altering his own timeline. Plus, his matter and life creation are on a level enough to create a second Power Battery (Mother Ring tells him it's Green Lanterns on the planet, after all) and create Guardians.
He was literally all of the light in the DCU. Past, present, and future.
Can any of the Green Lanterns take on Skyfathers and Elder Gods? If so, then Green Lanterns stomp. If not, then Rune Lord Thor solos (he is between Skyfather and Elder God) and possibly the other two as well.
God of Light Hal was literally omniscient and omnipresent... Any battle he's in against other beings that aren't omniscient and omnipresent are stomps unless it's inconceivable that any tech evercould ever harm them.
Fragarach is an instant kill that can only be used after an opponent's most power attack. It reverses time and alters fate to have the enemy's heart gouged out before they deal any damage.
As in, Saitama, who is evil and going all out, One Punches Bazett... and then time reverses and his heart explodes out of his body before he attacks.
This attack works even if the enemy's attack should have utterly obliterated the opponent, it's like their attack stops mid-swing and dissipates. As for reaction speed... Bazett has countered a directed energy weapon that's literally faster than lightning... Which should probably be enough. Saitama doesn't have many quantifiable speed feats to say that he's significantly faster than lightning. Just lots of equivocation and apologists about "laser beams are light speed".
Bazett Fraga McRemitz is the ultimate anti-bloodlust hero.
Your rule #8 sucks.
My other answer is Gen 3 Wobbuffet with a Focus Sash. It was standard equip alright >:D
He literally immobilized New-52 Superman AND Wonder Woman simultaneously without any effort. His presence concealment allows him to just be invisible to them. Especially Hank Henshaw, as Henshaw's sensory abilities pale far in comparison to anyone here.
His forced teleportation, which was so instantaneous that even the Flash couldn't react to it, is what allows him to constantly gimp Cyborg Superman until he can just drop him into the Source Wall.
Heck, he could just teleport the other team into each other's attacks until Cyborg Superman kills New 52...
OP has been modified to remove Fujin from Miwa. Though, honestly, any situation in which Shuuji would need to use Fujin would probably count as a loss... as he'd temporarily become a normal human being while switching between Triggers.
Fujin is, imo, actually hilariously weak. All it has is attack power and range, which it trades for pretty much 100% of the utility that makes Standard Triggers so strong. Heck, if I had to choose between Keridon and Fujin, I'd probably choose Keridon.