In addition to her sadism, Nethelio has a more loathsome general personality - one full of vices and bad attitudes that are very common among humans in general, but concentrated into a single person with great sadism and almost zero restraint, creating an effect where, in combination between all these factors, a truly horrible person emerges. She has an extreme prejudice against non-Antillambrae, considering them to be pathetic creatures and animals in comparison to Antillambrae, a perspective only held by her (and strongly against Niophae's view that non-Curse beings are the ultimate source of Curses), and it colors much of her dialogue, though she of course quiets down whenever Niophae is around when it comes to this particular view. In addition, she has a distaste for creatures with traditional sexes, seeking reproducing via sexual intercourse rather than self-sustaining "bloom" the way Antillambrae and Sin Eaters do, or varied methods of production the way Glim do, to be sad and pathetic in comparison. Despite this, she has an extremely creepy personality where she shows lecherous attitudes towards many of her female enemies, and displays almost no shame in this fact, and even makes cruel jokes about claiming her enemies for herself this way. She shows no interest in her fellow Antillambrae however. She believes that humans have a nature to hate each other, and that no matter what bonds they form, they will eventually succumb to hate and dislike each other, thus viewing all humans as creators of Curses. This is, in effect, a reductionist version of Niophae's philosophy, who instead believes that while humans are a vast source of Curses, the most powerful and deep wells of curses are those who are born from otherwise positive goals, such as to protect a loved one or restore that which was lost, whereas Nethelio simply views curses in terms of hate and cruelty, possibly due to her own experience effectively entirely consisting of such feelings, wry comedy and loyalty to her master aside. She has a bad sense of humor and often makes cruel jokes whenever she can. Despite all her horrible personality traits, she treats her Lesser Antillambrae rather kindly.