Author's Notes:
This is just a short fun "What If" Situation involving Godzilla in the Goku Black Saga. Enjoy!
A King with the power to kill a God? Godzilla Vs Goku Black!
Our story begins with Goku and Vegeta in their SSGSS forms fighting against Black in his SSR Form who was charging a Super Black Kamehameha and proceeded to fire it, forcing the two Saiyans to block the attack as the impact nearly drained them of their stamina when Black used his Instant Transmission to appear beside them and deliver a ferocious kick that was more than enough to not only injure the two Saiyans but also drop them of their Blue forms.
"Any last words before I erase you Mortals from existence?" Goku Black said as he charged a Full Power Black Power Ball in his right hand.
"g..Go to Hell" Vegeta uttered before collapsing from near exhaustion.
"v..Vegeta, no, I have failed, forgive me everyone." Goku said just as Goku Black had just finished charging his Black Power Ball and was about to fire it when suddenly he sensed a powerful energy signature from the nearby ocean.
The ocean started to boil as something started to erupt from the ocean as it suddenly gave way to a massive creature that resembled a giant reptile with huge dorsal fins. This creature was the King Of The Monsters, Godzilla.
"What is that?" Goku Black said as he eyed Godzilla. "The gods were even more foolish than I thought to have created something so hideous". Goku Black then charged up a Black Kamehameha as Godzilla walked up onto land and gave off a loud roar that shook the earth. Black then said "There is no place for a creature like you in my utopia of the gods!" as he fired the Black Kamehameha at Godzilla which created a point blank explosion. Black smirked as he saw his Kamehameha explode only for his smirk to turn into shock when he saw Godzilla walk out of it like it was nothing.
"d..Damn you, i'm the strongest" Black yelled as he then uses his Divine Lasso to fire off multiple energy javelions that stuck onto Godzilla's hide and exploded, but even that did nothing to hurt the King Of The Monsters. Zamasu then appeared and suggested Potara Fusion. Both deities then fused into Merged Zamasu who then quoted "My form is Justice,And my form is the world. Worship Me, Give Praise unto me. Me, the beautiful, the sublime..Me, the invincible, the almighty and divine..All Hail Zama.." but before he can finish his sentence, Godzilla striked Zamasu with his tail which sent Merged Zamasu into a nearby building.
"You would dare defy Justice, beast" Merged Zamasu said as he flew into the air and began to create a sun-like energy sphere on the index finger on his right hand yelling "The gods made a mistake allowing a creature like you to exist, time to perish, HOLY WRATH".
Merged Zamasu then threw his Holy Wrath attack towards the King Of The Monsters when Godzilla's dorsal plates then began to glow azure blue and being surrounded in blue sparks of electricity as Godzilla's eyes then glowed blue as Godzilla let out a mighty roar when suddenly, Godzilla fired off his Atomic Breath which was strong enough to briefly halt Zamasu's Holy Wrath.
Zamasu was struggling to halt Godzilla's Atomic Breath as he saw that the attack was starting to crack through the sphere Zamasu made. "H..How is this possible, a beast with the power to best a God?" Zamasu was then getting desperate as the halo on his back then enlarged and glowed even brighter. Both Goku and Vegeta then woke up to what was going on. "Is that thing besting Zamasu right now?" Goku said. "Damn, first Kakarot and now this thing is capable of surpassing even me?" Vegeta said. Future Trunks was able to make it in time to heal them both. "How is he able to put Zamasu on the ropes?" Trunks said as he feared the possibility of Godzilla being a bigger threat than even Merged Zamasu.
Godzilla's dorsal plates begin glowing red with sparks of purple electricity as Godzilla fires his Spiral Heat Ray that was able to completely penetrate through Merged Zamasu's Holy Wrath and disintegrate the deranged god. "How can something surpass divine justice?" Zamasu yelled before being turned to dust as Godzilla then let out a victorious roar as Trunks stood there with fear and awe in his eyes as he saw a being that surpasses even the gods themselves.
"Well, at least he was able to beat Zamasu for us." Goku said, chuckling as Vegeta saw that Godzilla was yet another road bump to his path to absolute power. Godzilla then walked back to the sea, letting out one more roar before submerging back to the sea. The three Saiyans were able to head back to the present timeline where everyone was awaiting their return.
"So, were you able to beat Goku Black and Zamasu?" Bulma said as Goku said "Actually, we weren't the ones who beated them, it was this giant lizard thing that killed him". "Was it Shenron?" Gohan said as Goku said "No it wasn't, it was way worse, it looked like a giant dinosaur with spikes on its back". "Well who cares if it was a dinosaur or not, what matters is that we're okay?". Everyone was able to celebrate their victory with a massive party at Bulma's place.
The End.