Many eons ago, the Arkeyans had protected Skylands from The Darkness. The true origins of the Arkeyans are lost in the mists of time (which everyone admits was a bit careless). All that was known was that they began experimenting with magic and technology to create incredible new machinery... but, as so often happens, they went too far. The Arkeyans found themselves advancing much faster than the other races of Skylands. They were the first to discover the Tech element, and later, were the first to discover a way to merge Magic and Tech together. This discovery made them ridiculously powerful. Soon, their quest for knowledge turned into a quest for power.
The good Arkeyans stood against their power-hungry brethren and said that instead they should focus on music, the arts, and popular sport at the time, Roboto-Ball. The problem was that most of them also played Roboto-Ball said since roboto-balls themselves had the tendency to explode, most peaceful Arkeyans eventually disappeared. The war-driven Arkeyans soon outnumbered the peaceful ones, and the Arkeyan conquest of Skylands began.
Led by the Arkeyan King, who wielded an iron fist known as the 'Iron Fist of Arkus', the Arkeyan Empire spread like wildfire. During their rule, the Arkeyans uncovered the secrets of the Eternal Magic Source and guarded it to prevent future generations from discovering their secrets.
The original Skylanders, the Giants, banded together to free Skylands from the Arkeyan's tyrannical reign and defeat the Arkeyan King. In an epic battle, they managed to lock an elite battalion of Arkeyan robots inside a vault. With the Arkeyan forces weakened, the Giants went after the King and removed the Iron Fist from his defeated hand, destroying him and deactivating countless Arkeyan robots, spread across Skylands. But the Giants' act of bravery carried a heavy price, and they were swept from Skylands, arriving on Earth where they have been buried for 10,000 years.
Skylanders: The Machine of Doom
During their reign, the Arkeyans had built a large machine that was capable of destroying the Core of Light, called The Machine of Doom. However, it was built as a trap used to capture those who were tempted to steal the weapon, knowing that anyone who was brave enough to get through the Forest of Fear (and their worst nightmares), stole the Chattering Key from the stone wyvern, and tempted enough to climb into the Machine of Doom, was too dangerous to walk free.
In the modern era, Kaos had sought after the Machine of Doom to trick the Skylanders into trying to reach it before he does, therefore springing the trap in order to bury the heroes alive. His plan failed, as the Skylanders were able to control the Machine, and they, along with Kaos, were able to escape the Arkeyan trap.
Skylanders: Spyro's Adventure
The history of the Arkeyans are explored in the Quicksilver Vault and Arkeyan Armory. One Arkeyan, the Weapon Master, helped the Skylanders retrieve the Quicksilver and the Eternal Magic Source that were needed to restore the Core of Light.
Some Arkeyans were left behind by their civilization as defenses for their abandoned Armory and Vault, but they are enemies to the Skylanders who seek out the final Magic components to the Core of Light. Other Arkeyans were summoned as guards for some inhabitants of Skylands, or serve any current Arkeyan leader.
- Drobot assembled his robotic suit using Arkeyan technology.
- The Arkeyans made skeleton warriors as foot soldiers, the most notable one being Chop Chop, the current name of this species is unknown.
- As the Arkeyan Conqueratron mentions the Arkeyans' "glorious" temples, it is possible that the Arkeyans had some form of religion. It is also possible that the temples were for the worship of the Arkeyans themselves by "lower" species.
- As the Iron Fist of Arkus can turn organic beings into mechanical versions of themselves, plus the fact that the ciry of Arkus had a bakery (which is stated to have fallen into disuse as robots have no need to eat), it is possible that the Arkeyans were originally organic and became robotic.
- Skylanders: Giants Official Strategy Guide Q&A, page 217