Basic Titan Info :
Long before the rise of humankind, the Earth was ruled by an ancient and powerful species known today as the Titans. Towering in size and varied in form, these colossal beings have existed since prehistoric times, walking the Earth in an age when the planet itself was still young and volatile. However, new archaeological evidence and extraterrestrial findings suggest that not all Titans are native to this world, many may have originated from other planets or even dimensions, making the true history of the Titans a complex and cosmic mystery.
Titans are known to consume nuclear radiation as their primary energy source, drawing power from deep within the Earth's crust, radioactive materials, and even manmade reactors. Despite their size, their metabolism is highly adaptive. While radiation sustains them best, they can occasionally survive on other forms of energy or matter depending on their biology and environment.
Most Titans bear a surprisingly humanoid or vertebrate-like anatomy, bipedal movement, forward-facing eyes, and defined musculature. This is not due to any shared ancestry with humans, but a result of convergent evolution, where different species develop similar traits independently due to similar environmental pressures. It is a striking biological phenomenon that adds to the mysterious connection between humans and these godlike creatures.
One of the most astonishing traits of the Titans is their adaptive evolution. These beings do not evolve slowly over millennia like most lifeforms. Instead, their biology allows rapid adaptation in response to environmental stimuli. A Titan can drastically change its physical and even behavioral traits over the course of months if faced with specific threats, climates, or challenges.
This extreme adaptability extends to their offspring. Titan children, though initially sharing similar features, often develop into wildly different adult forms depending on their surroundings. This has led to the emergence of variant Titans, individuals with drastically different powers, appearances, or temperaments despite common ancestry.
A fascinating yet puzzling aspect of Titan biology is the rarity of males. Studies suggest that, like some large terrestrial mammals, male Titans may have once exhibited extreme aggression that led to instability among populations. Over time, this likely caused their numbers to dwindle drastically. As a result, nearly all Titans seen today are female.
Interestingly, female Titans are not only more common but also generally larger and more powerful than their few male counterparts. Their growth is typically driven by absorbed radiation, and unlike males, their physical maturity plateaus at a certain size threshold. After this point, further energy is redirected toward durability and internal energy reserves, rather than further increase in stature.
Each Titan species possesses unique biological structures and physical traits that reflect their elemental alignment, origin, and ecological role. Some are built for raw power, like Godzilla and Destroyah; others for flight and agility, like Rodan and Mothra; and some for aquatic dominance, like Tiamat and Na Kika. Their proportions vary wildly, some are massive and heavily armored, others serpentine or insectoid. Regardless of form, every Titan commands immense presence, designed by nature or evolution to be the apex of its environment.
The smallest adult Titans are no less than 150 meters tall or long, while the largest, such as Earth Godzilla or Shin King Ghidorah, can reach towering heights over 500 meters. Male Titans, when present, tend to peak around 125 meters, but are exceedingly rare and not often seen in the wild.
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3rd POV - (20 Years Before 2014 - The Himalayas)
The winds howled across the frozen ridges of the Himalayan mountain range. Towering peaks pierced the heavens, their icy slopes untouched for centuries. Yet beneath these ancient giants, something stirred. Patrolling the range were two titans, Godzilla, the current alpha guardian of balance, and her mother, the revered Heisei Godzilla, Sei for short, larger and more powerful, yet quieter in her wisdom. They moved like living mountains, their thunderous footsteps causing distant avalanches to roll down glacial cliffs. But their patrol came to an unexpected halt when a low, vibrating growl echoed across the entire region.

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I'm the only WHAT!? (Monsterverse Kaiju Girl Harem x Male Kaiju Reader)
FantasyLong before recorded history, the Earth was ruled by titanic beasts, gods of flesh and scale, locked in endless struggle for dominance, balance, and survival. Among them were both male and female Titans, who clashed, mated, and reigned in cyclical h...