Requested by Epona2

It's time for the battle of gods among monsters!

Cthulhu

Even while asleep in the Pacific, Cthulhu can reach out and manipulate people in their dreams.

When he awakens, his influence would cause world-wide panic.

He has a physical form, but it isn't made of the same type of matter found in this universe.

Can survive underwater, in the vacuum of space, and many extraterrestrial environments.

Can recover almost instantly from what would be fatal attacks, such as having his head split open by a boat. However, these do leave him incapacitated.

Can never truly die; he will outlast death.

Feats

Drove a large number of people worldwide into temporary madness from just waking up.

Killed another Great Old One, his son, T'ith.

Healed almost instantly from having his head split open by a boat. (Was incapacitated)

Implied to have destroyed stars on his way to Earth.

Flew to Earth from a distant binary star.

Created the city of R'lyeh.

Weakness

Defeated by Mint Berry Crunch (South Park canon)

May be unable to fully manifest in our universe without being let in, or at least focus his attention to the right place.

Native deities and cosmic beings may seek to banish/destroy him.

Users presence is easily felt, making stealth all but impossible.

May be susceptible to Sealing or Banishment.

Some users may be unable to inhabit normal universe without nourishment.

Godzilla 

Atomic Beam.

Fireball.

Atomic Fire.

Red Spiral Ray.

A red and more powerful version of his Atomic Beam.

Ultra Atomic Fire Ray (Purple Atomic Breath which fires from his dorsal spines and Tail).

Radioactive Flame Stream (Godzilla would release a large cloud of high density, high temperature smoke. This smoke would give way to unleashing a radioactive fire blast attack, the blast is wide spread).

Phased-array Radar (Can release Atomic Rays from his dorsal plates/spine).

Nuclear Pulse.

If Godzilla's mouth is closed before he fires the Atomic Beam; the beam instead detonates within Godzilla himself. It creates a shockwave that strikes anyone near Godzilla. Godzilla himself is not seriously harmed by this explosive force as his body is designed to create this atomic energy.

Can power-up atomic breath and ranged attacks with natural electricity.

Can charge atomic energy into physical blows.

Sub-Atomic level healing.

Environment Adaptation (in Shin Godzilla)

Physique

Godly strength.

Uncanny durability.

Sharp dorsal plates.

Can breathe underwater via gills.

Sharp Teeth.

Sharp Claws.

Burrowing.

Bashing Tail.

Body Radar

Feats

44 wins, 9 losses, 7 ties.

Battled Rodan for 12 hours.

Has defeated his arch-rival King Ghidorah multiple times; including Kaiser Ghidorah.

Destroyed his more powerful clone, SpaceGodzilla.

As Super Godzilla, defeated Bagan, a fusion of Godzilla and King Ghidorah DNA.

Defeated King Godzilla, a fusion of Godzilla, King Ghidorah, Battra and Biollante DNA (Godzilla Manga).

Destroyed Magita, the Queen of the Trilopods and a monster so massive that she completely dwarfed Godzilla and his allies.

Defeated multiple kaiju at once.

Abe to defeat multiple Kamacuras.

Defeated both male and female MUTO.

Fought against an army of MechaGodzilla Drones and Mecha-King Ghidorah, alongside Anguirus 

Defeated both Mechani-Kong and MechaGodzilla.

Survived Hell itself; fighting several demonic kaiju, including a Demon-Godzilla (Godzilla in Hell). 

Defeated 10 monsters in a row in Final Wars.

Easily defeated Kumonga and Kamacuras.

Defeated Rodan, Anguirus and King Caesar at the same time.

Killed both Hedorah and Ebirah at the same time with ease.

Effortlessly defeated Zilla within 15 seconds [2].

Held his ground against The Avengers and the Champions; Black Widow, Hercules, Angel and Ice Man (Marvel).

Fought multiple dinosaurs after getting sent back in time through Doctor Doom's time machine (Marvel).

Killed Orochi, the 8-headed dragon.

Killed several Olympian gods and monsters including Zeus.

Destroyed Mount Olympus.

Destroyed Shinomura, a monster that can regenerated from a single cell (in Godzilla Awakening).

One of the strongest kaiju in his franchise.

Can propel his 25,000-ton body hundreds of meters into the air with a single leap

Threw the 30,000 metric tons Kumonga clear over the horizon.

Redirected the 60,000-ton Anguirus through the air with just his tail

Lifted & threw Keizer Ghidorah who weighs 100,000 tons.

Lifted & threw Mechagodzilla II who weighs 150,000 tons.

Matched Thor's strength.

Broke a continental plate.

Strong enough to lift a 200,000 metric ton Biollante Neo (Godzilla King of the Monsters Manga)

Plowed through the Golden Gate Bridge like it was nothing

One of the most durable kaiju in his franchise.

Survived point-blank nuclear explosions on multiple occasions.

Survived getting crushed under skyscrapers on multiple occasions.

Still standing after having two Skyscrapers fall on top of him, it takes another two to momentarily knock him out (Shin Godzilla)

Recovered quickly from Massive Ordnance Perpetrators, the most powerful bunker busters in existance (Shin Godzilla)

Survived being smothered by a pool of Hedorah's acidic sludge

Survived 4 years frozen in an iceberg in (Godzilla: Rulers of Earth).

Survived & escaped a mini black hole.

Survived the Absolute Zero Cannon point blank

Is flown to the upper atmosphere and dropped back to Earth, along with 100,000 tonnes of Keizer Ghidorah on top of him from the same height and is perfectly fine

Tanked Castle Bravo, the most powerful nuclear bomb created by the United States

Survived a meteor point blank without a scratch.

Tanked Mechagodzilla's entire arsenal, which turned him into a blood sprinkler, for an entire minute and is still standing

Spent 5 years in a volcano.

Swam through the Earth's core

Survived the extinction of the dinosaurs (in Godzilla: Rage Across Time).

Survived having a giant crystal impaled through his leg (Godzilla vs SpaceGodzilla Manga Adaptation).

Survived being impaled through the chest with Battra's horn (Godzilla vs Mothra Manga Adaptation).

Regenerated from a beating heart.

Destroyed the Earth in this battle with SpaceGodzilla (Godzilla in Hell).

Can casually tag supersonic jets out of the air with his hands, tail, and atomic breath

Shot down B-2 Stealth Bombers despite not seeing where they are (Shin Godzilla)

Caught the hypersonic Megaguirus' stringer in mid-air with his jaws

Defeated genetically and mechanically enhanced kaiju he previously fought (Godzilla King of the Monsters Manga series).

Fast enough to catch SpaceGodzilla's crystal projectile with his jaws (Godzilla vs SpaceGodzilla Manga adaptation).

Kicked off the eruption of Mount Vesuvius (Godzilla: Rage Across Time).

One of the most recognizable and famous fictional icons in history

Killed God, Satan, Zeus and the Greek Gods

Weakness

Killed by the Oxygen Destroyer

Atomic Breath becomes self-destructive if Godzilla has a massive hole near his neck or shoulders (GMK).

If his second brain is destroyed than Godzilla will be paralyzed and immobile.

Can be immobilized by certain artificial diseases, heavy blizzards or freezing attacks, UFO tractor beams or Mothra's silk.

Hedorah's poison easily burned through Godzilla's hand and eye and Hedorah's smog almost suffocated Godzilla.

Susceptible to mind control

Massive missiles can still damage Godzilla (Godzilla vs Mechagodzilla, Godzilla Against Mechagodzilla, Godzilla Tokyo S.O.S, and Godzilla 2000).

Vulnerable to strong surges of artificial electricity

Gills and armpits are weak spots

Sensitive to light

Somewhat clumsy and slow due to size

When fighting against faster opponents he relies on his durability to compensate

Can be overwhelmed by superior numbers of opponents

Lost to King Kong & Mothra

Has been knock-out by Jet Jaguar (with one punch).

Current version is very ugly

Fight

As the explosion from the self-destructing Gypsy Danger dies down, Kiryu's headpiece crashes onto the ground and it's eyes blinks twice before it dies out.

Raleigh and Mako watches in shock, surprised from the outcome of the battle. As they recover, all of a sudden, both Mako and Raleigh heard a loud roar coming from the ocean, causing them to look.

A giant theropod dinosaur resembling the mecha bursts out of the water, and it faces the burning city before letting out one mighty roar.

The monster is no other that Godzilla, the King of the Monsters!

As Mako and Raleigh watches in horror, all of a sudden, the two heard a loud splash from the other side.

Godzilla turns to look.

A giant monster with a large cephalopod head rose from the water and the creature roars at Godzilla.

Both Raleigh and Mako widens their eyes in shock and recognition.

The monster is Cthulhu, the cosmic entity.

Apparently, the battle has attracted both monsters into the same area.

Both Godzilla and Cthulhu roars at each other before the two charges towards each other.

Cthulhu roars and almost immedaitely, Raleigh and Mako began clutching their heads and screaming in agony.

Godzilla roars in pain and he clutches his head.

Those loud screams and voices in his head, they are driving him mad, real mad.

But Godzilla will never give up, he will never succumb to those voices. He is the King of the Monsters! He will always win!

Godzilla charges up an atomic blast and he fires it at Cthulhu, causing the monster to roar in agony.

Godzilla roars angrily at Cthulhu and he charges forward to engage his opponent in battle.

Both Godzilla and Cthulhu grabs each other and the two wrestles against each other.

Cthulhu impales his claws into Godzilla's chest, causing Godzilla to roar in pain.

Cthulhu slashes his claws across Godzilla's tail before grabbing him and lifting him up.

Godzilla growls and his spikes began glowing blue.

All of a sudden, Cthulhu felt a sudden hot burning blast striking him from the head, causing the monster to roar and throw Godzilla into a building.

Cthulhu regenerates from the attack and he growls angrily at Godzilla.

Godzilla roars at him and the two monsters began attacking each other.

Godzilla fires several atomic blasts at Cthulhu, but Cthulhu flies up into the air and he swoops down, knocking Godzilla down.

Godzilla roars in pain as he crashes down.

Cthulhu roars and he grabs Godzilla by the tail before flying into the air and plunging headfirst into the water.

Godzilla roars and thrashes as Cthulhu swims deeper underwater.

Godzilla kicks Cthulhu back and he swam forward, ramming into the monster.

Godzilla grabs Cthulhu by the arm and he bites down onto it, causing the monster to roar in pain.

Cthulhu swung his arm, smacking Godzilla back.

The King of the Monsters charges up a heat beam and he fires it at Cthulhu, but Cthulhu dodges and he slams into Godzilla's chest.

Cthulhu grabs Godzilla by the neck and he swiftly began swimming up at incredible speed.

Cthulhu then bursts out of the water and he slams Godzilla down, only to get dragged back underneath by Godzilla.

Godzilla grabs Cthulhu and he throws the god out of the water onto land.

Godzilla charges up a hyper spiral ray and he fires it at Cthulhu.

Cthulhu flies up and he spun in the air before swinging his tail, slapping Godzilla back.

The god then grabs Godzilla and he launches both him and his opponent into the air.

Godzilla roars and thrashes as Cthulhu flies higher and higher into the air, attempting to drag him into space.

Not willing to allow that to happen, Godzilla began charging up nuclear energy within him and before Cthulhu knew it, Godzilla unleashes a powerful explosive wave.

Wounded by the attack, Cthulhu roars in pain and he releases his grip, causing Godzilla to fall.

Godzilla roar and he crashes headfirst into a skyscraper, the sheer weight of his body causing the building to crumble.

Raleigh and Mako watches in shock as Godzilla pushes himself up, seemingly unfazed by the fall despite the height.

Amazed, Mako remarks.

Mako: Wow, Gojira sure is tough.

Raleigh: Yeah.

Raleigh agrees as the two watches Godzilla roaring.

As Cthulhu swoops down, Godzilla charges up a Hyper Spiral Ray and he fires it at the oncoming monster.

The temperature of the nuclear blast and the speed of the Cthulhu's travel began causing his head to heat up, causing the monster to roar in pain.

Cthulhu roars in agony before his entire body explodes, brightening the evening sky.

Godzilla watches the flames dies down and he watches as something lands on the ground.

But to his horror, Cthulhu does not seem to be affected by the attack, apparently angered by it instead.

Godzilla roars and he swung his tail.

But Cthulhu ducks underneath and he slashes his claw upwards, causing Godzilla to roar.

Cthulhu then wraps his tentacles around Godzilla and he slams the King of the monsters repeatly onto the ground before pulling him by both ends.

Godzilla roars in sheer agony as he felt his entire body ripping into two.

Then without warning, Cthulhu lets out one mighty roar before ripping Godzilla into two.

Mako screams and she cover her eyes while Raleigh watches in both fear and shock.

As Godzilla's blood spills over Cthulhu's head, Cthulhu lets out one mighty roar before dropping Godzilla's severed body on the ground.

Cthulhu lets out one victory roar before letting his darkness spread across the world.

Raleigh closes his eyes and he embraces Mako just as darkness began shrouding around the city.

Deserted island

Owen Grady, the former Raptor keeper of the closed Jurassic World Park stares at the city from afar, his jaws open.

Just what is going on?

Owen has lost contact with everyone ever since he crash landed on this mysterious island and with an evil cloud enveloping his home, Owen Grady is now lost.

Owen then picks up his rifle and he walks towards a Japanese Shinto Temple not far from the area.

He needs to find a way back home.

As he walks, all of a sudden, Owen heard a loud thunderous foot hit the ground, Owen looks up in horror as he saw a large theropod stepping out of the trees.

The theropod is several times larger than a Tyrannosaurus with large jaws and thick crocodilian scales.

The creature is a Vastosaurus Rex and it's out for blood!

Owen: Oh shit!

Owen curses and he quickly made a run for it just as the Vastosaurus Rex lets out one mighty roar.

Owen sprints and he slides down a slope as the predator persues him relentlessly.

Not far, at the same time

Ann Darrow looks around the forest, lost and confused.

Ever since she lost contact with James Conrad and Mason Weaver, Ann has been wandering around the island, lost and confused.

Just then, something on the ground caught her eye.

Ann lowers down and she picked it up to inspect it.

To her horror, Ann screams out in disgust and she drops it onto the ground.

The object is horrifyingly, a piece of flesh seemingly clawed out of a reptilian creature.

What caught her attention is connected to it, is what looks like a tracking device.

As Ann gasps for breath, all of a sudden, a crimson drop of  blood drops onto her hand, causing her to look.

Ann then looks up and her blood run colds as a shape began moving along the atmosphere.

The invisible shape began shifting until it began taking form, revealing a large theropod dinosaur with long sharp talons and a ghostly white scales.

The creature is the infamous Indominus Rex!

Ann backs off in fear as the Indominus Rex approaches her, hungry to have a taste of her flesh.

Ann screams in terror and she began running just as the Indominus Rex lets out one mighty roar.

Ann sprints through the jungle, trying her best to avoid getting bitten by the Indominus Rex's jaw.

As both Ann and Owen runs towards the Shinto Temple, little did they know is that their little persuit is about to start a fight.

KO!

The winner is

Cthulhu

Advantages and disadvantages

Cthulhu

Faster

Tougher

Stronger

Immortal

Unfazed by Godzilla's attacks

Lacks durability

Lacks strategy

Godzilla

More intelligent

More durable

More versatile power and abilities

Not as strong

Can still die

Not able to fight against anything as powerful and immortal as Cthulhu

Victory quote:

Call of Cthulhu: We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far

Up Next

Vastosaurus Rex vs Indominus Rex