Renekton earned the title of Shurima's goalkeeper for a backwater fight in the mountain pass. On that occasion, an army landed and invaded from the southern coastline and approached the ancient city of Zurita. If the enemy army is not kept out, the entire city will be razed to the ground, and the inhabitants will be brutally poisoned. Renekton led a squad of surprise soldiers, attacking the enemy with one enemy and ten heads-up, trying to delay the evacuation of the city as much as possible. No one thinks that Renekton has a chance to survive this fight, let alone win. But he held out for a day and a night in the pass until Nasus' reinforcements arrived. In the end, only three or five soldiers were still standing, all scarred. Renekton is enshrined as a hero.

Renekton has been on the front lines for decades and has never lost a battle. His presence is an encouragement to the soldiers around him and a shock to the morale of the locality. He experienced victory after victory, and even some of the soldiers won without a fight, and the enemy country immediately surrendered as soon as they heard that Renekton was leading the march.

The middle-aged Redton was gray-haired and experienced, and suddenly one day the bad news came that his brother was on the verge of death. He hurried back to the capital, only to see that Nasus was like a gray remnant of the time when he was in high spirits, already consumed by a vicious disease. He suffers from an incurable disease, which is said to have ended an entire noble family in ancient times by a rotten curse.

Either way, Nasus's greatness is there for all to see. Not only was he a highly decorated general, but he was also the director of the Shurima Library, having written many of the most remarkable works in the history of the empire. The Holy See of the Sun announced that the Sun intended to answer him for the Ascension Ritual.

The people of the entire capital had gathered to witness the sacred ceremony, but the tragic illness had left Nasus unable to recover, and he did not even have the strength to climb the final steps to the Altar of Ascension. Inspired by the most selfless love, Renekton picked up his eldest brother and climbed the final flight of steps, waiting for himself to be obliterated by the divine energy of the solar disk. He thinks that his sacrifice is insignificant, and that everything is in exchange for his brother's life. After all, he was only a martial artist, and although he was a gifted master, his elder brother was a scholar, thinker, and general like no other in the world. Renekton knew that what Shurima needed was Nasus in the years to come.

However, Renekton was not wiped out. In the dazzling light of the sun's disk, both brothers were reborn. When the light faded, two great ascendants appeared in front of people at the same time. Nasus was transformed into a tall, lanky figure with a canine head, while Renekton took on the form of a massive crocodile. Their image is very expressive, with jackals often considered the most intelligent and witty beasts, while the ferocity and fearlessness of crocodiles perfectly fit Renekton's character. All of Shurima thanked the gods for giving them these two new demigods as guardians of the empire.

Formerly a great war hero, Renekton has been blessed as an ascended man beyond mortal comprehension. He was stronger and faster than any normal person, and seemed to feel no pain at all. While the Ascended are not immortal gods, their lifespans are greatly extended, allowing them to continue serving the Empire for hundreds of years.

With Reekton leading Shurima's army, their empire's military power is completely unstoppable. He has always been a ruthless commander and a fierce warrior, and beneath this new exterior lies a power beyond imagination. He led the Shurima soldiers through many bloody victories, and he was not merciful or willing to accept the mercy of the enemy. His legend spread far beyond the Empire, and his enemies gave him the name Butcher of the Desert, his favorite title.

Some, including Nasus, felt that a part of Renekton's humanity had gone forever with the Ascension. As the years passed, he seemed to become more brutal, more bloodthirsty, and more out of the norm, and began to whisper rumors that he was spreading atrocities in the name of war. Regardless, he has always been a staunch defender of Shurima, and he has faithfully served many successive emperors, ensuring the security and prosperity of Shurima's empire for hundreds of years.

During the reign of Emperor Azir, it was reported that a flame magical spirit had escaped the confines of the magic sarcophagus in the underground prison. It had destroyed a Shurima town and headed east into the desert. Renekton and his brother Nasus are tasked with capturing the legendary foe. While they were away, the young Emperor was guided by the wizard advisor Zelas to join them and become the Ascended. And the consequences of this act were catastrophic.

Renekton and Nasus were a day's walk from the capital, but even so, they felt the shockwave from when the Ascension Ritual went wrong. Knowing that something was wrong, they rushed back to the capital, only to see that the once gorgeous city was in ruins. Azir was killed, most of the capital's citizens were buried with them, and the great solar disk energy had been drained and was falling. In the middle of the ruins, they found Zelas, who had become a pure energy spirit.

The brothers managed to imprison Zelath in the magical sarcophagus that contained the ancient flame spirits. They fought fiercely for a day and a night, and the witch spirit was too powerful to be imprisoned. He broke the sarcophagus and used the energy of the solar disc to launch a spell against them, and during the fight, the solar disc eventually fell completely to the ground.

Knowing that they could not destroy Zelas, Renekton ended up throwing him into the endless tomb of the emperor and ordered his brother to seal them inside forever. Nasus knew there was no other way out and reluctantly complied with his brother's orders. Renekton and Zelas descended into darkness, and Nasus sealed the tomb forever.

In the darkness, Zelas and Renekton continued their battle. They have been fighting for countless years, and the once glorious and great Shurima civilization on the ground has turned to dust. Zelas poured evil words into Renekton's ears, and as centuries passed, his poisonous words and endless darkness finally brought evil results. The Witch has planted a false obsession in Renekton's mind, leading him to believe that Nasus is jealous of his success and unwilling to share in the power of Ascension, so he deliberately locks him in the dark.

Little by little, Renekton's sanity was disintegrated, and Zelas embedded wedges in the cracks, corrupting his sanity and obfuscating his ability to perceive and distinguish between reality and fantasy.

Thousands of years later, the Emperor's Tomb was opened by the mercenary Sivir, and Renekton and Zelas were freed. Renekton roared in rage and galloped into the Shurima Desert, sniffing the air in search of his eldest brother.