The Kree Empire was a major imperialistic, nationalistic, and militaristic interstellar government founded and ruled by the Kree species. The Kree are a scientifically and technologically advanced race of blue-skinned humanoids from the planet Hala in the Pama System. The Kree possessed very few rival entities, conquering every planet in their galaxy, establishing a vast empire. Throughout its history, the Kree Empire has fought a number of wars against rival empires and civilizations who refuse to submit to Kree rule, such as the Skrull Empire and the Nova Empire. During one of their wars, the Kree traveled to different planets and experimented on the local alien species in order to create slave-soldiers to help them in their wars. While most of these experiments failed, the Kree succeeded on several planets and created races of altered beings with powers. On Earth, these altered Humans created their own society and became Inhumans.
with the only widespread religion being worship of their Emperor the Kree Supreme Intelligence created thousands of years ago from the culminating of the greatest minds from the corners of the Kree empire.
The Kree Empire extends across thousand worlds in the northwestern lobe of the Greater Magellanic Cloud. The Kree began their Empire over tens of thousands of years ago, within a a hundred years of their first encounter with the then-benevolent Skrull Empire.
at some point ronan the grand accuser and the intelligence most trusted retainer attempted to destroy him in order to claim the throne in order to finish the war on the planet xandar started centuries ago but was stopped and banished from hala aboard his stars craft the dark aster and fell in to a deep sleep the Kree also attempted to conquer the back water planet earth but were opposed by its heroes eventually ronan was restored and made a beal with the inter galactic warlord thanos to find the power stone in exchange for xandars destruction but he soon betrayed him and took the orb for him self but the accuser was killed by the efforts of the guardians of the galaxy. Eventually after too many failed attempts the supreme intelligence decided to personally destroy the earth by first preserving its knowledge to enhance it's intellect and nearly succeeded but the kree emperor was defeated by the avengers and the cities stolen restored and the intelligence was killed when his mother ship exploded with the destruction of the supreme intelligence ronan along with the massive fleet that was forced to retreat after the invasion was stopped the Kree empire influence over the universe slowly began to diminish the threat posed to earth finally ended.