This article contains major spoilers for Zack Snyder's Justice League. You have been warned.
- "Men are still good; we fight, we kill, we betray one another - but we can rebuild. We can do better. We will, we have to."
- ―Bruce Wayne to Diana about humankind[src]
Humans, also known as Terrans to the Ko'erst and Landsmen or Surface Dwellers to the Atlanteans, are the dominant species that inhabit the planet Earth. They were created over 200 millennia before modern times by the King of the Old Gods Zeus.
They are a sister species to the Atlanteans, the sea-dwelling inhabitants of Atlantis, and, as a collective, possess several unique genetic traits that allow a small number of them to become the far more powerful metahumans. A smaller subspecies of humans can also naturally channel magical energies, Homo Magi.
Human beings are of the Primate order in the family Hominidae, and the only extant species of the genus Homo. Humans are distinguished from other primates by their bipedal locomotion, and especially by their relatively larger brain with its particularly well developed neocortex, prefrontal cortex and temporal lobes, which enable high levels of abstract reasoning, language, problem-solving, and culture through social learning. Human biology is considered to be fairly average for galactic standards. Humans, however, do carry the genetic potential to become one of the most powerful races in the universe, however, human physiology is years away from this level of power.
Humans use tools to a much higher degree than any other animal of Earth (due to Zeus having created them in the image of the Old Gods themselves), and are the only extant species known to build fires and cook their food, as well as the only known species to clothe themselves and create and use numerous other technologies and arts. The scientific study of humans is the discipline of anthropology. Hence, even Kryptonian alien Jor-El saw humans as the perfect race for his son Kal-El to live among and protect (notably considering them more open-minded than Kryptonians), following the destruction of Krypton.
Many millennia ago, Zeus, King of the Old Gods, created humanity, making them in the gods' likeness, and imbuing them with their virtues. As Zeus' son Ares started corrupting humanity with war, Zeus created a new race - the Amazons, who were intended to protect humanity from Ares' influence, while spreading love and compassion.
Millennia before the Black Zero Event, before the fall of Atlantis and the subjugation of the Amazons; humans,Amazons, Atlanteans, the Old Gods, and a member of the Green Lantern Corps joined forced in fighting off an invasion of Earth by Darkseid and his massive Parademon army. The battle resulted in Darkseid's first and only defeat and left him critically injured and unconscious and forced to flee when his forces and armada were being decimated. As they retreated, the army was forced to leave behind the three Mother Boxes, and each of the three factions of the army that helped save Earth would be take one and hide their respective box.
- "You're wrong about them. They're everything you say, but so much more."
- ―Diana describing her view of humanity to Ares[src]
During World War I, the Allied powers were at war with the Central powers. The Allies consisted of Russia, Serbia, France, Britain, Belgium and the United States, and the Central powers consisted of Germany, the Ottoman Empire, Bulgaria and Austria-Hungary. When Ares manipulated Dr. Isabel Maru into creating a deadly gas to destroy mankind, his plan was foiled and stopped by Wonder Woman and the Wonder Men. Later, the war ended when the Allies defeated the Central powers.
General Dru-Zod and the Sword of Rao planned to terraform Earth's environment into one similar to Krypton's with a machine called Black Zero, which would kill every human on the planet. One of the Kryptonian survivors on Earth, Kal-El, stopped the Black Zero and killed Zod, while the members of the Sword of Rao were imprisoned again in the Phantom Zone.
- "So, you have the blood of the Old Gods in you. The Old Gods died."
- ―Steppenwolf to Wonder Woman[src]
- Black Manta suit (Atlantean/human hybrid)
- Deadshot's suit
- Deadshot's wrist magnums
- Enchantress' artifact
- Flash suit
- Flying Fox
- Fokker Eindecker
- Good Night
- Grapple gun
- Intergalactic Simulative Translator
- Smiley Car
- Kryptonite spear
- Manta's Knife
- Nano-bomb detonators
- Oracle Network
- Robin suit
- Trick Boomerangs
- Utility belt