Niffty

Niffty is hyper, spontaneous, and agile, being very quick on her feet. She is easily entertained, easily distracted, and easily excitable. She dislikes when there is a mess in any room, and has a fixation on men in general. However, she appears to only like "bad boys", including a brief obsession with Sir Pentious. This ends in her kicking him in frustration after he apologizes and decides to seek redemption at the hotel. She isn't afraid to get dirty, and enjoys cleaning everyone's messes with a gleeful, yet creepy charm.

She becomes very focused on things she is told to do, such as in "The Show Must Go On" when she was told to stab angels and obsessively stabbed every angel she could, including Adam, whom she managed to kill. When interviewed for 666 News, Niffty said, quote, "Charlie told me to stab, so I did".

She is shown to enjoy violence, as she was very ecstatic to be thrown into a warzone as part of Vaggie's trust training, and afterwards stated she enjoyed when Sir Pentious was being hit with a severed arm. Despite all of her twistedness, she does have some kind of standards for how she views who is "bad" as she outrightly berates Sir Pentious for not being a bad boy when he was apologizing for trying to kill everyone.

She appears to have masochistic tendencies, shown when she liked the pain from falling off a stage and then repeated jumping off. She is also implied to be sadistic, stating her desire to "punish" people in a BDSM dungeon. She even outright states that she kills mother-bugs in front of their baby bugs as a form of lesson.

She is also shown to suffer from camera shyness, as whenever a camera begins filming her she goes into a state of hypnotic trance where she doesn't move, blink, or speak, just stares at the camera until recording is done.

Niffty has an extreme case of obsessive compulsive disorder, constantly cleaning the Hotel and obsession with ridding any bugs she sees to the point she would bring out a knife just to kill them. Even when taken outside of the Hotel, she constantly attempts to clean any mess, even in the sex club Cherri Bomb takes her and the other staff and residents to for drinks. When Angel Dust calls her a mess for her obsessive cleaning and attempted theft of cleaning supplies, she breaks down crying until Angel calms her down.

She collects things like hair or fur from men she is obsessed with, such as when she tore off a piece of Valentino's collar fur to keep for her "collection".