Gaiaterra: Elysea's Conflict/The Shattered Planets And Extinct Races

Also known as Memoriam Worlds by the Sundered, who often build massive tombstones etched with whatever remnant of the inhabitants they find. The Shattered worlds were once planets brimming with life and laughter. Only to be snuffed out when the Hierarchy came, consuming their planet to sate their neverending hunger, leaving only a coreless husk of rock as a reminder of their deed, often forming a long chain of dead planets as they rampage through the system.

Cybertron
The former homeworld of the Cybertronians. Cybertron is a shining metal, technological world; a planet of towering future cities without end and vast metallic plains, spiraling metal mountains and bottomless neon-lit chasms. Aside from the Cybertronians, the planet also possesses the mechanical equivalent of plant and animal life, with rough-hewn mountain ranges and great seas of mercury. The atmosphere and temperature on most of the surface is such that human life can survive unaided.

Unique among the planet harvested was that its race was actually spared by the Hierarchy and became a core member. This was all due to Megatron, who had betrayed his planet when he and his cult, known as the Deceptions, commenced a successful coup that disposed of the ruling government before pledging allegiance to the Hierarchy in exchange for letting them harvest Cybertron with no resistance. And had earned their place when the Deception had destroyed the invading army sent down to test if they are worthy.

For more details see here.

Novus
One of the many planets consumed by the Hierarchy. Novus is noticeable for being extremely advance for a planet that lacked FTL travel, its technology rivaling the Federation, which had sent out countless scouting probes, piloted by extremely advance robots, prior to the Hierarchy arrival. With one of the expedition team, the Founder, who founed of the Sundered and began rebuilding the planet with its technology.

Now Novus remains as a planet barren of resources, barring the earth beneath them, brimming with a society of androids, hellbent on avenging their creators by destroying the Hierarchy once and for all. While forging allianced with any race that somehow survived the Hierarchy attacks, such as the Sophons and Na'vi.

Hekim
The former homeworld of the Sophons. Hekim was a cold and rocky world orbiting a blue star. Due to the high radiation levels of their sun, they mutated and evolved quickly. As a result, despite their frail form and almost suicidal level of curiosity, the Sophons somehow survived the process of natural selection and developed a civilization prior to the Hierarchy invasion.

Eywa'eveng (Pandora)
Called Eywa's Child by the Na'vi and Pandora by the Federation expedition team, Eywa'eveng was an Earth-like habitable extrasolar moon from the Alpha Centauri System, the closest star system to the Federations own Solar System. It is the fifth moon of the gas giant Polyphemus, which orbits Alpha Centauri A. It is located 26,000,000,000,000 miles (4.423 light-years) from Earth. The names of both the moon and its mother planet are coined by Federation humans in reference to figures in Greek mythology.

Despite being almost as large as Earth, Pandora is only a moon of a planet that has thirteen other moons. However, due to the smaller mass, Pandora's gravity is 20% less than Earth's, although its atmosphere is much denser than Earth's due to the presence of heavier gases. Depending on the position of the various moons, Pandora can have two or even three moons in its sky at once, and have solar eclipses on almost a daily basis. Pandora and its sister moons also cast large black shadows on Polyphemus.

Pandora itself was discovered by space telescopes at some point between 2050 and 2077 of the Federation timeline. They were stunned by evidence of strong magnetic fields. Pandora's discovery prompted the invention of even larger space telescopes for more accurate readings.

The news services would run clips of the wild scenery on Pandora and its bizarre flora and fauna, prompting many people on Earth to dream about visiting the planet, although this was mainly reserved for the hyper-rich or qualified Resources Development Administration officials.

Around the year 2119, an expedition party, led by Parker Selfridge, was sent to make first contact. And though diplomacy was initially rocky, the Federation and the Na'vi had reached an agreement with the Na'vi officially joining the Federation as a member, and gets the final say in how much Unobtainium the Federation could mine.

Unfortunately, the Hierarchy had come before the alliance could be formalized. And despite the combined effort of the Expedition and the Na'vi to hold out until the Federation army could arrive. The Hierarchy vastly superior technology, in comparison to the Expedition's slightly outdated equipment and the Na'vi using stone-age tools, had let them easily steamroll the defenses and Pandora was drained of its resources and its flora and fauna were wiped out, and by the time the Federation had reached Pandora they only came upon a desolate husk and considered the planet and its species extinct. And it was only through Eywa using its final strength that the Na'vi's themselves weren't wiped out, though only 1% of their population had remained, and said remnants would have gone extinct within a month had the Sundered failed to reach them in time, who then took the remnants with the Sophons taking what scraps of DNA they could scrouge to try and restore the many lost species, alas the DNA of the many flora and fauna was irreparably damaged, like every remnant after a Hierarchy harvest, and the Sophons could only made mechanical echoes of the extinct animals at most. With the remaining Na'vi's now living their lives on the Fringe Worlds, planets they escape the Hierarchy grasp by the fact that they have little to no resources, and doing their best to help the Sundered to avenge Eywa, with many Na'vi's themselves connecting into special terminals that lets them control mechanical constructs to fight alongside the Sundered drone army, as despite their eagerness to fight they know full well that they don't have the numbers to fight like a proper army.

Rafkon
The home planet of the Rafkonians, of which Zayto and Aiyon, leader and member of the Dino Fury Rangers respectively, originated. Rafkon is a planet covered in large deserts, had three suns of differing sizes and colors, and contains some amount of magma chambers.

65 million years predating the Age of Stone, Rafkon came under threat from the Hierarchy. To combat it alongside the Knights of Rafkon, its military created the Sporix by using a machine built into the planet's core. However, their creators did not do enough testing before deeming them complete, and they caused incredible destruction as soon as they were released.

When the Sporix left for Gaiaterra, the Knights followed them, and had managed to stop the sporix but got wiped out in return, barring Zayto and Aiyon who entered stasis tubes which had froze and healed them until they got discovered by the Rangers 65 million years later.

Sometime during the 65 million years between the Knights pursuing the Sporix to Gaiaterra and Zayto reawakening in the present day, Rafkon was attacked by the entire Hierarchy fleet. But by then many of the Rafkonians had evacuated their planet from a combination of the Sporix and knowing that they can't fight the Hierachy, with one of these evacuees being Tarrick, Santura, and their daughter, who had crash landed on Gaiaterra and similarly entered stasis before being discovered by Aquilan archeologist. Who then dug them out and began experimenting on them, in the secret lab area 62 before a disaster happened, letting Tarrick and Santaura to escape but losing their daughter in the chaos, leading her to be rescued/adopted by the facilities janitor, Ed "Pop Pop" Jones, to be raised as Amelia Jones, who years later would become a member of the Dino Fury division alongside Zayo and Aiyon.

And in the ensuing invasion, the Hierarchy had not only harvested Rafkon but also took its Sporix Generator, causing the planet's core to become unstable and the whole planet ultimately exploded.