Garland initially deemed Kuja a failure. According to the Final Fantasy IX Ultimania[1], Kuja was created as he is and never experienced a childhood. Thus he never developed full human emotions and would never be able to enter Trance, the world's ultimate power.
Garland最初认为Kuja是一个失败品。根据FF9的U本，Kuja被创造出来时就是这个样子，从未经历过童年。因此他从未发展出完整的人类情感，也永远无法进入世界的终极力量-Trance（幻化）。
*我错了，Trance上一句搞成催眠了

A strong mind of his own with no feelings of remorse or conscience was a dangerous mix, perfect for inciting war, but difficult for Garland to harness to his own ends. Garland thus placed a limit on Kuja's lifespan and created another Genome who would be different from Kuja from the outset: Zidane was created as a child able to learn and grow, and thus develop the ability for complex emotions needed to enter Trance, making him superior to Kuja.
他具有非常强大的自我意志，没有悔恨或良知，非常危险。这对于挑起战争而言堪称完美，但对于Garland来说很难驾驭，无法用来达到目的。Garland因此为Kuja的寿命设定了限制，并从头创造了另一个与Kuja不同的基因组：Zidane。Zidane被创造出来时，还是个孩子，能够学习和成长，因此也产生了进入幻化状态所需的要素——拥有复杂情绪的能力，这是Zidane优于Kuja的地方。
While Garland never told him, Kuja was only a temporary Angel of Death meant to kill people on Gaia until Garland could perfect the true Angel of Death: Zidane. Kuja felt threatened by the new Genome and kidnapped him and abandoned him on Gaia. Garland continued using Kuja, while a third Angel of Death, Mikoto, was created, but outraged at Kuja's behavior, Garland banished Kuja from returning to Terra. Kuja, defiant of his master, made his home in the Desert Palace instead, though he frequents Treno and is known there as a nobleman.
Garland在完善真正的死神Zidane之前，从未告诉过Kuja他只是用于杀害Gaia居民的临时死神。Kuja感受到了新基因组带来的威胁，于是将他绑架并抛在盖亚。Kuja继续为Garland所用，同时第三个死神星命（Mikoto）被创造了出来。星命对Kuja的行为感到愤怒，Garland禁止Kuja回到泰拉。Kuja出于对创造者的反抗，（没有回到盖亚）选择在沙漠皇后安身。但他经常去特雷诺，在那里大家都以为他是个贵族。

Fostering war
酝酿战争
Mwahaha... So the curtain rises! Perfect, my canary. Let me show you the truth about your mother! First Act: The End of Ugly Desire. It's showtime!—Kuja, to Garnet
"哈哈哈哈……帷幕打开了！ 时间刚刚好，我的金丝雀啊。我为你揭开你母亲的真面目吧!" ——Kuja对Garnet如是说（disk2）
Kuja serves as a weapons supplier to Queen Brahne so she can conquer the neighboring nations of Burmecia and Lindblum and capture their crystal shards. The weapons Kuja supplies are the black mages, soulless golems who wield powerful magic. It is hinted Kuja knows how Genomes are manufactured and used his knowledge in making of the black mages.
Kuja担任Brahne女王的武器供应商，帮助她征服邻国布尔美西亚（Burmecia）和林德布尔姆（Lindblum），以获得邻国的水晶碎片。Kuja提供的武器是没有灵魂的黑魔法师魔像，魔力强大。有迹象表明Kuja了解魔像是如何被制造出来的，并在黑魔法师的制造过程中用到了自己的知识。
At some point Kuja kidnapped Hildagarde Fabool, a noblewoman from the nation of Lindblum, who has taken a prototype airship from Lindblum that flies on advanced technology named after her, the Hilda Garde. Kuja kept her captive and, in need of an audience to fuel his narcissism, told her of his plans to conquer Terra an Gaia while taking the airship for himself.
Kuja绑架过林德布尔姆国的贵族希尔达嘉蒂.法布尔（Hildagarde Fabool），她从林德布尔姆乘了一辆使用同名先进技术（希尔达嘉蒂）的飞空艇原型机偷跑。Kuja将她关起来，并且在夺取飞空艇时，出于自恋将她当做听众，向她讲述了自己征服泰拉和盖亚的计划。

Zidane, Vivi, and Garnet track Kuja, following leads to the Black Mage Village and the summoners' ruined village of Madain Sari, recruiting Quina, Eiko Carol, and Amarant Coral along the journey. The group continues to theIifa Tree, a gigantic tree that assists in filtering the Gaian and Terran souls—the Mist that Kuja uses to create the black mages is a by-product of this process. The party kills Soulcage, stopping the flow of Mist, but Kuja arrives on his dragon and tells them he no longer cares.
Zidane、Vivi和Garnet追踪Kuja来到黑魔导士村及召唤士的玛丹·萨里村遗迹，沿途Quina、Eiko和Amarant加入了队伍。一行人继续来到夏娃之树，这棵大树起着过滤盖亚和泰拉灵魂的作用——Kuja用以制造黑魔导士的雾就是这一过程的副产品。一行人杀死灵魂之狱，阻止雾的流出，但Kuja已经乘上了龙，并且告诉他们说自己已经根本不在乎了。

Brahne's fleet arrives, and Brahne, deeming she no longer needs him, attacks Kuja. Kuja survives Brahne's onslaught and she summons Bahamut. Kuja enslaves Bahamut by calling forth the Invincible, a Terran airshipable to house souls, and kills the Queen by destroying her fleet.
Brahne的舰队抵达，Brahne认为自己已经不再需要Kuja，就攻击了Kuja。Brahne的猛攻并没有伤及Kuja的生命，然后她召唤了巴哈姆特。Kuja通过招来能安置灵魂的泰拉飞空艇无敌战舰控制住巴哈姆特，摧毁Brahne女王的舰队杀死了她。