Upon a time, there was a proud warrior of the Knuckles Clan. Strong and noble, with cunning that matched the hunting cats of the jungles. One that saw the virtue of taking the enemy's greatest weapon and using it for the good of the clan. And when the war against the Nocturnus came to its climax, the folly of their hubris came at a terrible cost. Wearing the battle-skin of the technologically-advanced warmongers, Kohua was pulled in with them into the Twilight Cage. Alone and bereft of enemies, Kohua had fought aliens and Echidna until standing before the Imperator himself.

A cunning warrior with no home to return to and defeated in combat, scarred and tired, he had no choice but to bow. A dishonor that stained his soul even now. Untold years beyond the Cage passed and what came out when the Nocturnus Clan at last escaped in a strike force, Princeps Kohua emerged. Ages had passed. Cities had risen and fallen. And the Knuckles Clan was no more.

The moment he and the investigation squad looked upon the ruins of his former home, Kohua turned on his comrades as suddenly and coldly as the cobra his battle-skin motifed. Still a Knuckles warrior with horrendous strength and a brutalist in reverence to the war spirits, their ends were not pleasant and the last blood to be spilled on the now-sacred ground. Sacrifices to nature-claimed altars. The former Princeps kept his ear to the going-on through the interdimensional communications, unsurprised to Ix's megalomaniacal designs while he crushed offshot hideouts that the clan planned to use in their invasion while Shade helped the Mobian heroes.

In the mangling use of the Phase shift technology that got him back to Mobius, Kohua found himself on Moebius a couple times and under the eye of the Suppression Squad that oversee most of the land. Clanless, the Echidna found himself selling his services for the twin dimensions gifted with a warp ring while providing some of his own technological knowledge. Not all in clear weariness of the Moebians and their ways. Primarily on Mobius nowadays, Kohua enjoy a somewhat quiet existence with a hard-earned independent wealth...well, that is until one of the countless tyrannies decides to break his quiet hedonism.