Personality
At Noxs core he's an insecure, self isolating, bitter person who covers it with a stone-faced expression and lies for his own amusement. He is, however, happy to help anyone when asked. Though he’s easiest to convince to do someone if it’s presented as an argument for him to win. He’s extremely argumentative and enjoys debating concepts whether ethical, abstract, concrete, etc. He enjoys learning, especially history, and is very inquisitive. Nox also loves writing, especially songs. He is the lyricist and singer for his band, and he occasionally plays guitar as well.
He dresses in a Mall Goth type style with baggy pants, chains, studs, and belts. He looks like a Hot Topic threw up.
Relationships
Everyone in a higher tier Nox still feels like they have other people more worthy of their time so he still feels isolated from them also why his admiration tier is jealousy, he always feels an underlying bitterness even with positive relationships.
His relationship with everyone in Hisui was tenuous at best, but after his exile he detests almost everyone. Those that helped him he still likes enough, but the clan leaders tick him off in a specific way for it. Melli has a special pass in that Nox thinks he’s such a rancid bitch that he loves it. Naturally magnetized to all that is insulting, argumentative, and annoying.
Family
Nox’s ties with his family are extremely tenuous and difficult. He loves his Grammy and will do absolutely anything for her, even if it includes being around the rest of the Maddox family. His grandfather Harold has been dead since long before Nox was born. The family refuses to speak of him in any capacity.
His relationship with his aunt Nadine is the least challenging, as she tends to be more supportive and understanding of him. Joanna tries to be supportive and kind to him, but the constant pestering and judging from his other aunts referencing Joanna and Dawn have sown too much bitterness in him. Vivienne and Eileen are the most critical of him.
Nox’s relationship with his parents is the roughest. He does not know his dad in any capacity, as his mother does not speak of him past insults she’s thrown at Nox. Colleen had met Dennis right as she went to start college, but after becoming pregnant suddenly, Dennis left and cut all ties. She refused any help from the family to attempt to prove herself as independent, but would have to quit school and settle down where she could. She’s always held a deep resentment towards Nox because of this situation.
Early Life
Transition
Nox transitioned when he was almost 19 and basically decided to go scorched earth on his previous identity and treats "Christie" as an entirely different person he has never met except for with a select few people. Only his family, Alder, and N officially know. A few of his past friends have a suspicion but he has not/will not address it with them. Volo notably does not know, as Nox has only discussed his post-transition past when asked about pre-Hisui.
Christie wasn't very personally known by many people anyway since she was very confrontational and self isolating. When she disappeared after fighting Team Plasma, people rightfully assumed she'd moved back with her grandmother in Sinnoh, but they incorrectly figured she just never came back to Unova. The Maddox family is also so large that, if someone finds his last name, it’s easy for him to use the cover of being vaguely related to her instead.
It’s less a matter of him not wanting to associate with having been a girl, and more him hating his childhood and using it as a way to cut those memories off from himself.