Arex is the son of Dark Council member, Darth Occul. Arex is quite different from most Sith. While most rage or terrorize, he is calm and collected, level headed, and at times, a gentle giant. He is a Light Side Sith Warrior. He was raised in his Mother's estate, having lived in the large manor most of his life before being sent to Korriban for training. Arex was not impressed to be used by Overseer Tremel for his superiority nonsense. But he still did his best to pull through his training and survive, leading to him meeting and befriending Vette. He managed to make it off Korriban with Vette as Darth Baras's apprentice. He had immediately felt off about Baras, having gotten the worst feeling about him. But he focused on trying to do what he needed, without being killed. Along the way, he met and befriended Malavai Quinn. Then Baras sent him after Noman Karr, his unknown Padawan, and those close to her. Something he was not fond of doing. He did what he could to mitigate the damage Baras's quest would do, leaving Master Yonlach and Knight Yul-Li alive, convincing Jaesa's parents to go to Drommond Kaas since he couldn't leave them there knowing Baras knew they were there, and convincing Baras to leave them alone and get them a decent living when they got there. All while letting Baras think he had everything going to plan. Then he finally met, and defeated Noman Karr, and met his Padawan, Jaesa Willsaam. Officially, Jaesa became known as his apprentice that he turned away from the Jedi and the Light. In reality, Jaesa was still a Jedi Padawan. Noman Karr was exposed to Jaesa and their Order. Arex and Jaesa both agreed to call the Council ahead of Karr's arrival to tell them what happened with him, Jaesa, and Arex. The Council was surprised, but grateful for the information. Arex warns them that his Master knows of Jaesa and her power, and wants her destroyed. He does not want to do that however, and with Baras's spies in the Order, there's too much risk to send Jaesa back. So he offers, as a way to save her, that they pretend he's taken her as his apprentice, but still make sure she could continue her Jedi training. To anyone else, that's what she'd be, but to them, and the Council, she'd still be a Jedi. The Council is, understandably, a little hesitant, and ask Jaesa what she wants. She used to her powers to feel out the situation, and agreed that it was for the best for her safety, the safety of her parents, and that Arex was being genuine. The Council agrees, and they set up everything Jaesa would need to continue her training, even if she couldn't safely go back to Tython yet. His adventures continued on, leading to him being betrayed by Baras, protecting Vowrawn, defeating and imprisoning Baras, and becoming the new Wrath. Sometime later in his career, he ends up crossing paths with Havoc Squad Commander, Tyrlin Drish. He watches as the Trooper prepared to fight him, most likely having heard reports of what he is capable of.
Yet, Arex makes no move to fight him. Instead, Arex and Tyrlin end up talking for a while, learning a bit about each other before Arex takes his leave. The experience leaves Arex rather curious about the Major, and wanting to know more. He does as much research as he can about him, but information is slim. But he keeps trying. Eventually, they meet again. And as it turns out, Tyrlin was also learning about him, and was just as interested in him as he was in him. Neither are quite sure why, but they can't deny the interest, or feelings, growing between them. He meets with Tyrlin more, getting closer to the Trooper and falls in love. But he and Tyrlin both know they can't really be together; Tyrlin because of his loyalty to the Republic and his team, which is part of what he loves about Tyrlin, is his fierce loyalty, and Arex because of his family and friends still in the Empire. So despite loving him, Arex lets him go. But his superiors find out not long after he and Tyrlin decided to separate. They wanted to take advantage of this opportunity, and order him to go essentially undercover, learn more about the Major and the Republic and report back to them on it. He doesn't want to do that to Tyrlin, but doesn't have much choice. And he's most certainly not happy about it. So he goes on the new mission he'd been assigned. Arex meets with Tyrlin, and Tyrlin immediately tells him what his superiors want him to do, and that he doesn't want to do it. Immediately after, Arex also tells him that his own superiors want him to do the same thing to Tyrlin. He can senses the other man's doubt, confusion, and pain in the Force. He wanted to make it better, for both of them, as its not fair to either of them. Then he gets an idea. He suggests to Tyrlin that they take advantage of the situation, having basically been given permission to be together, even if it was meant to be sneaky. He can see and sense that Tyrlin still has his doubts, as it would mean going against the Republic. Arex then suggests they both give good, but effectively useless information when needed, that way it looks like they are sticking to their missions, but aren't actually betraying anyone. Tyrlin thinks about it for a moment, as Arex waits with baited breath, then agrees, as it won't really make him go against his loyalties. He's beyond relieved that he can be with Tyrlin and not force him to betray anyone he cares about or go against his loyalties to the Republic. The plan works, and no one is the wiser about it. Arex finally ends up dating Tyrlin, becoming his boyfriend and later, his husband. And he is very happy about it. His mother is also very happy for him, as are his friends.