Human

Biology
Humans are a highly advanced and intelligent race of sentient, bipedal mammals native to the planet Earth. Like that of other mammals on their homeworld such as echidnas, dogs, cats, sheep, cows and tigers, humans give birth to live young. Females can produce and give birth to approximately 1-3 infants at maximum, sometimes even more in different circumstances. Known for their robust physiology, they are fast, strong, agile and have incredible durability. The humans on Earth-87469 however are faster, stronger, smarter and more durable than zin and the average human from other timelines.

Compared to some other species in the universe such as the zin, almost every human has a unique physical appearance. Their basic anatomy resembles that of other bipeds. Humans have long arms with a pair of hands that have five fingers, which also has almost razor sharp nails that can cut through almost any material. They have forward facing eyes and colors vary with almost each human ranging from blue, green, hazel, brown and yellow. On Earth-87469, the irises are incredibly bright which gives them their night vision. Another distinct feature of humans is their hair, varying in length from long to short to varying in colors such as brunette, brown, blonde and red. The overall appearance between males and females vary greatly. Males are generally taller and have a flat chest and have more muscle on most of their body including their waist. Females however, are usually shorter and have a very slim, small body structure. The significantly higher estrogen levels in females cause them to store more fat in the buttocks, hips and thighs, compared to a male, which also gives them their slim waistline. They also have breasts protruding horizontally from their chest which contains milk rich in minerals and vitamins that is fed to their young during infancy. Unlike Zin, Humans have a wide emotional range, allowing them to display complex emotions such as happiness, sadness, fear, anger, jealousy and much more, thus giving them emotional attachments and connections to people of their own kind such as their mate, family and friends. Thus, they are capable of displaying hormone-based sexual attraction to a mate, in which they have the desire of intercourse for pleasure and to reproduce. A trait which the Zin fail to display as they do not have nor display the same emotional range.

The average human is superior in strength compared to zin and the average human that came before. Humans are also armed with sharp nails that could almost be considered claws and have night vision equal to a canine. Smell receptor sensitivity has increased majorly, giving humans excellent sense of smell with a one mile radius. Humans can also sense other animals through small vibrations. With Earth's weather now changed, humans are capable of rapidly adapting to hot, cold or humid conditions by altering their body temperature to either cool down or warm up. This is possible because of small, almost microscopic hairs on most parts of the body. While still the same material, their endoskeleton is now reinforced, making their bones harder to break under mostly normal circumstances.

This mutated biology has also allowed humans to heal from minor injuries at a faster rate and adapt to common health problems such as lack of sleep and screen time, which no longer effects health, intelligence and memory, making these issues redundant. They also have sixty-five percent thicker skin. Lung capacity has increased by forty percent allowing them to hold their breath for longer. The jaw has also grown stronger, making it harder to break than that of the normal human and now has two extra sharp teeth for eating meat. Like usual, males and females have their own unique traits, while both can be and are equally strong, fast and intelligent they have their own unique genetic traits

Females are capable of transmitting small waves from their hands that can alter an infants behavior and calm them. They can also transfer fifteen percent of their body heat to infants to either keep them cool or warm. They are also lighter and slightly faster due to their bones being lighter to that of males. Males on the other hand have stronger bones and muscles, allowing them to run faster and jump higher. Their nails are also sharper but not as long as that of a female. However, their heavier bones and muscle mass make them slightly less flexible than females.

Culture
Humans are known for their "odd" way of life, as observed by the Zin and have the desire to advance their technology every several decades. Earth's economy is large and wide but pales in comparison to that of the Zin's economy. Humans become a fully grown adult at around age 18, albeit their brain doesn't fully develop until they reach 30 years old. As an adult, humans seek further education to get a career, a normal job or join the military.

Several countries on Earth have very religious beliefs, such as India which believe cows are a sacred animal, thus they do not harm or kill them. America and some other countries have Christian beliefs, thus they worship god and believe that he created Earth and the humans themselves.

History
Humans originally started as ape-like animals with similar behavior. Other the next several thousand years, they evolved to look more like the modern human, though they wore animal skins, use logs, sticks and rocks as weapons and made unusual noises until they adapted and made proper speech.

Humans have a wide history for violence and war, as seen with Ancient Greece with the war between Sparta and Athens, dating back thousands of years ago, before the birth of Jesus Christ. Conflict and religious beliefs spanned centuries, from Ancient Egypt through to the medieval era and beyond.

Medieval Crusades (1095-1291)
The crusades were a series of religious wars started and directed by the Latin Church in the medieval era, starting in the Holy Land. Church sanctioned campaigns were started to combat paganism and heresy. However, the crusades also resulted in violent conflict between kingdoms as well.

American Revolution (1765-1783)
The American Revolution was a political revolution sparked by British citizens living in America in order to gain independence from the British crown, deviating from the United Kingdom, thus establishing the United States of America, the first modern constitutional liberal democracy

Industrial Revolution (1760-1840)
Beginning in Great Britain, the Industrial Revolution was the transition to brand new manufacturing techniques in America and Europe in the mid-1700s. This brought about the use of steam power, iron manufacturing, water power and the use of machine tools.

World War I (1914-1918)
World War I was a global war that started in Europe after the assassination of high ranking member of government at the hands of a Bosnian Serb Yugoslav nationalist. In retaliation, Austria Hungary issued an ultimatum to Serbia not long after. The United Kingdom eventually became involved and Australia and New Zealand followed soon after.

World War II (1939-1945)
World War II was and still is the greatest conflict in human history, until Devil's Night. After the events of World War I, Germany was low on many resources until Adolf Hitler helped the nation rise up to become the most powerful nation. The war started when Germany invaded Poland and declared war on the United Kingdom and France. Germany soon after formed the axis alliance between Italy and Japan, which also rose up to possess an impress military prowess in which Japan became a major threat as well after bombing US military controlled Pearl Harbor. In the following years, Adolf Hitler was presumably assassinated but the war was ended once and for all when Japan surrendered after the nuclear bombing of Hiroshima in 1945.

Cold War (1947-1991)
The Cold War was an era of geopolitical unjust between the Soviet Union and the United States. The so called war consisted of an arms race, in which the United States and Soviet Union were competing to advance technology, such as who was first to land on the moon and much more. It was also somewhat of a competition of who had the most impressive nuclear arsenal. The Cold War was also the result of the Soviet union establishing the Warsaw Pact in 1955.

Zin Invasion (1999)
On Earth-87469, humankind would change once more, forever with the invasion of the Zin Empire in 1999. The humans were victorious over the zin, however, the damaged alien ships crash landed all over the world, destroying many major cities and town, sending humanity into a temporary apocalyptic state. One year later, humanity began to rebuild and by late 2000, humanity was fully rebuilt.

Zintek Revolution (2016-Present)
The Zintek Revolution was the worldwide advancement of mankind's culture and technology when a group of scientists discovered the true potential of zin technology. Through the use of the alien technology, the revolution brought the rise of cybernetic enhancement and holographic displays, to name a few. Cybernetic augmentation became widespread to people with missing limbs, broken spines and meningococcal disease. Cities were majorly renovated and became megacities, several times their original size, climate change was also eradicated with the use of science and less methods that resulted in pollution. With the use of the advanced technology, Australia, Russia and a few other countries rose up to be world superpowers with Australia now possessing the most advanced technology and unrivalled military in the world. Other nations began to reconcile with Korea as it's government aimed towards peace, rebuilding Seoul as a concept city known as the City of Tomorrow, allowing anyone to visit the city as a sign of peace.

Human Evolution (2018)
In the early 2000s on Earth-87469, crashed Zin ships began to leak a mysterious gas into the atmosphere, repairing it and forcing climates to return to a stage before global warming. This change in conditions also forced genetics in humans aged twelve and above to evolve in the year 2018, becoming the new puberty and stage in adolescence. This evolution made them smarter, stronger and faster among other things. Those over the age of fourteen underwent a painful mutation that occurred worldwide. But as others turned twelve it happened to them over time just like an average puberty. Overtime they would grow stronger and become smarter, their nails would grow sharper and longer and their other traits would come when they reach adolescence.

Devil's Night (2037)
Devil's Night started when the mysterious L.E.G.I.O.N. appeared from the shadows and initiated a worldwide assault, completely destroying several governments with the goal of establishing a new world order in which L.E.G.I.O.N. controls all. Australia's military, including the elite ANZAC X military program was corrupted and used against it's own country, it's military was also used to destroy the American, Russian and Japanese navy, allowing for an easy invasion from sea. Russia, one of the few countries to survive Devil's Night, became stronger from the event thus establishing the Cold Warrior military program, though not many subjects survived.

L.E.G.I.O.N.-M.A.Y.H.E.M. War (2037-present)
Once the M.A.Y.H.E.M. Initiative became famous, their war against L.E.G.I.O.N. became know and was called the LEGION-MAYHEM War. In 2042, the United Nations requested that M.A.Y.H.E.M. operates under it's jurisdiction but the request was denied. The United Nations however, continues to support the M.A.Y.H.E.M. Initiative in it's war against L.E.G.I.O.N.