Katriontra was born 17 October 1795 as the first child to King Akriontra and Queen Daryci. He was named after Katriontris the Legendary, a Niraxian hero whom Akriontra revered. Growing up, Kah exerted signs of leadership and strategy and became popular among his classmates. His father, seeing the potential in his first-born son and heir, authorised Kah's training in martial arts at a young age. By the time Kah reached his teenage years he was already a skilled close-quarter fighter. He was trained by the Niraxian Armed Forces' best military teachers and sergeants who taught him battlefield strategy and tactical thinking, skills a Niraxian King would definetely require. His charismatic nature and unstoppable demeanour made him famous throughout the civilian world and he became a celebrity throughout the Niraxian Empire. However this caused a divide to fall between him and his younger siblings Nikriontra and Luciontra, something that Kah would regret for the rest of his life.
When Kah reached adulthood, he was officially inducted into the Niraxian Armed Forces, forming his own elite unit. However shortly after the Bryckster Faction launched their invasion on the Niraxian Empire. Kah led the defensive against them, being able to push back the Bryckster forces until he was caught in an ambush on the desert planet of Sortego II. Knowing death was imminent, Kah bestowed the ancient Niraxian custom of Sacrinum upon the last of his men and died valiantly.
Katriontra is a tall, muscular Niraxian adult. He has short, spiky Red hair with streaks of blonde. He has pearly white skin and dark eyes. Katriontra will usually wear Royal clothing. On some occasions, he wears a ream and gold coloured suit of armord. The armor has golden plates on the chest with scriptures on red fabric. On the back of the shoulders is a long red cape, which he wears to battle. On his bicept is black armor plating with his rank engraved in green on it. On the lower half of his body are cream coloured armor plating. On Katriontra's shins and feet is a thick layer of black Nano fabric.
Kah was described as a charasmatic and charming character, leading to a cult-like persona around him especially with a large number of females. He frequently travelled throughout the Empire meeting its citizens and attending special ceremonies.
Like his younger brother, Kah was a skilled fighter mastering Niraxian martial arts at a young age. He was a fast learner and was also a master of battle strategy. During the Fighting War Kah was deployed with an Elite unit of soldiers with whom he trained with earning their respect and friendship. Their unit was responsible for early Niraxian victories in the war.