Nilma Oordar was the son of Maksag Oordar, his successor as ruler of Mantar, a title he later lost to his wife Gorona, but which he regained later in life, becoming the ruler of Mantar once again. In that capacity he became known as the Angry King who declared Mantar as the superior Xaewoon Blue state, instigated religious cleansing and attempted to invade Qep.

He was the father of Rodare, who was also Kren Oordar, founder of the Oordar clan.

Nilma became ruler of Mantar in 1542, as he turned 12. Maksag died in 1543, leaving Nilma as the only Oordar. Nilma, however, was supported by a strong team of advisors and politicians, loyal to Maksag and Kren, and originating from all parts of the Oordarian proto-empire, which provided Nilma with a vast network.

Nilma's ascension was viewed as the direct and legitimate continuation of Maksag's rule and did not change the stability, established in Mantar by his father. Surrounded by the same people as his father, Nilma felt little interest in making any dramatic changes and instead maintained the status quo. He did, however, express interest in propping up the role of religion early on, something that would become the definitive feature of his later rule.

He developed a good relationship with Kren the Younger and in 1545 SR brokered peace with Qep, sealing it with marriage to Gorona Toarlameek, daughter of Lora's lafit Taley Toarlameek. This demonstrated Nilma's skill as negotiator and strategist, probably at least in part due to his advisors and their understanding of the power dynamics in Qep: negotiating with Lora instead of Qep city undermined Qep city's government and later helped secure Toarlameek rule over the region a decade later.

Kren was unhappy with Kren the Younger's and Nilma's friendship and eventually convinced his son to remove Nilma from power.

In 1547 Kren the Younger staged a plot in the name of several Nilma's key advisors and supporters. The plot involved the independence of Goolkoon, a large city, formerly city-state Goolkoon, which was conquered by Mantar half a century ago and which was still the least loyal to Mantar. Nilma chose the strategy of diplomacy and installed Gorona as Goolkoon's lafit, someone with Qep's lineage, so as to ease the tensions and reduce the appearance of oversight, learning from Kren's and Maksag's mistakes at Or. Gorona was thus put in a position to uncover the alleged plot.

At that time Kren the Younger organized a visit to Mantar and he stopped at Goolkoon, which was geographically closer and made sense. As the plot was uncovered, Kren had Gorona lure in the alleged perpetrators to Goolkoon under the pretense of a celebration of Krenthe Youngers visit and had her arrest execute them, thus murdering most of Nilma's loyalists.

When Nilma had learned of the situation, he immediately arrived to Goolkoon. He had a meeting with Kren the Younger behind closed doors. Nilma later claimed that Kren the Younger accused Nilma of being behind the plot in order to undermine Tonaran's rule. He then cut off his relationship with him. In Tarnarian culture being cut off from the head of the family usually meant a death sentence, but Kren the Younger said that Nilma's life will be spared because of his father, Maksag. However, Nilma was to pass on his title to Gorona and tell her he does so willingly out of embarassement. This later point was a source of particular humiliation for Nilma, one that he never forgave Kren the Younger.

Nilma seemed to have immediately realized what had happened, since he was well informed about Kren's dislike of him, but was unable to do anything to counter the move due to his immediate and complete loss of political power. He was, however, able to slowly rebuild his influence in Mantar over the next two decades, becoming Gorona's unofficial advisor and a shadow figure behind many events in Mantar and Qep.

At some point in the 1570s Gorona had learned the truth, but refused to side with Nilma against Oordars and went as far as to remove him from the court completely, as a sign of loyalty to Kren the Younger.

Nilma then moved to Tonaran with his son Rodare. By this time he was not seen as a threat by Kren the Younger, who seemed to think that Nilma's decision to come to Tonaran is proof of Nilma's complete downfall.

Nilma, however, began using his significant informal influence to prop up Rodare as a successor to Kren the Younger against his younger brother Pherro, poised to become the next head of the clan. He began to unite factions that were opposed to Kren the Younger's rule in Tonaran, as well as activate his connections in Ernele, Or and Toyen that he had cultivated for decades. For example, he would forge letters from Tonaran in order to portray Kren the Younger as irrational and overly suspicious. He also began corresponding with many of the Oordars and powerful lafits throughout Heran in order to prepare the ground for the overthrow.

When Hee and Iar suddenly confronted the family in the west by capturing Kamey-Yr and also taking Pherro hostage, Kren the Younger made a decision to exchange Pherro for the city of Orden. Nilma used that decision against Kren the Younger, arguing that this was a sign of weakness and that this would bring the whole family down. Rodare then urged to remove Kren the Younger as leader. The family began gathering at Tonaran to deal with the matter, when Kren the Younger was murdered, possibly on the orders of Nilma himself. As the family convened at Tonaran, Rodare proclaimed himself head of the clan.

Rodare then installed Nilma as king of Mantar, denouncing his mother's title, marking her loss in the power game. Gorona had to flee Mantar to her sister in Qep city.

Nilma immediately returned to Mantar to assume power. Gorona's court largely relocated with her to Qep, and Nilma was able to easily promote many of the people who had supported him during his political exile to important positions. This made him popular among the elites of Mantar, who saw his rule as a way to advance their careers and wealth.

As revenge on Gorona, he removed Goolkoon's lafit from power and installed a pro-Mantar governor in his place, changing his diplomatic approach that he demonstrated half a century earlier to merciless suppression. He then made Goolkoon Mantar's military center and had the army stationed there, which extinguished the culture of independence that was still prevalent in Goolkoon.

Additionally, Nilma instituted strict religious laws that give more rights to Xaewoon Blue followers and dramatically limit the rights of non-believers, foreigners and slaves, as well as the followers of a different Xaewoon Blue interpretation, specifically the Foft. While it is more common for the green stron of Xaewoon, under Nilma Ienana were now promoted into positions of power.

When Rodare vanished in 1593 SR, Nilma was in the middle of assuming power in Mantar, which created a power vacumm in Tonaran. This was an unexpected development, but Nilma also knew that Tonaran is governed by those who just came to power through his and Rodare's power grab and should, thus, be loyal to Nilma. He, thus, chose to largely ignore the situation in Tonaran and focused on building his vision of the Oordar rule in Mantar.

His indifference towards the rest of the clan and their lafits and sole focus on increasing his own influece played into the downfall of Oordars, who had lost not only the stability of Kren the Younger, but also the potential strong leader in the face of Rodare.

Nilma was described as extremely charismatic, intelligent, but also bitter. According to Davi the Heranian, he was “as much driven by his intellect and he was by bitterness and thirst for revenge. His belief in fairness and diplomacy was replaced by sarcasm and pessimism and a contrarian form of thought that defied expectations of him of those he thought were his enemies.”

Nilma relied on having close relations with people of different beliefs, political allegiance and origins. He was well educated in history and politics, although he was wary of the military and did not trust them, firmly believing that military should be secondary to the political and the divine.