The Tkon Empire, also known as the Empire of the Endless Flame, was an interstellar empire that once existed within the galaxy.
The origins of this empire was dated thousands of years ago when the early Tkon civilization developed on their home world as a simple hunting culture. At the time, a meteor crash landed on their world which was discovered to had been the Devil's Heart, a powerful artifact which allowed the race to erupt outward into a far flung stellar empire. (TNG novel: The Devil's Heart)
- This account states that the Devil's Heart was also responsible for the Tkon Empire in withering and dying.
This powerful empire existed for centuries and spread its might to other worlds such as Wsor and Rzom. At its height, the Empire even sent ambassadors to the Organian civilization though the inhabitants of Organia turned them back and refused contact with them. At the time, the Tkon faced their biggest crisis which was the fact that their star was dying and threatened to exterminate their mighty empire. This led to the formation of the Great Endeavor where the entirety of the empire poured its vast knowledge and resources to save their home world during the Age of Xora.
Despite their attempts, in the Age of Makto the Tkon were being tested by the entity called 0 who along with his compatriots began causing crisis after crisis within the empire. This began with the colony world of Rzom rebelling against the rule of the Tkon home world. However, the empire managed to persevere through this hardship and neared the completion of the Great Endeavor which would have moved their star system around a new healthy star. But before this was accomplished, 0 caused the Tkon home sun to destabilize. This, and "a wave of supernovae" ended the Tkon Empire. (TNG - The Q Continuum novel: Q-Zone, Last Unicorn RPG module: All Our Yesterdays: The Time Travel Sourcebook)
The United Federation of Planets classed both the T'Kon and Cytherians as Index 100 on the Weibrand lograithmic development scale and placed them on the base line of the unaffected races (UR). (DS9 reference: Star Trek: Deep Space Nine Technical Manual) In 2370, there was a sharp rise in the price of relics that belonged to either the T'kon race or those of the Chodak in sectors near the Romulan Neutral Zone. (TNG video game: A Final Unity)
The Empire was based on the Tkon home world where its heart was within the capital of Ozari-thul. Its supreme leader took on the title of Empress and its symbol was that of the Endless Flame. (TNG - The Q Continuum novel: Q-Zone)