Villanelle is the one who fronts most often, making them the host of the system. They're outgoing, manipulative, violent, unstable, and posessive. One of their main goals in life is to have fun and Villanelle's definition of fun typically includes murder and shopping. Villanelle maybe a (great) assassin, but later omm, they find the job unsatisfying and they want something more. Something they've rarely let themself want before. A (somewhat) normal life with their girlfriend.

She's very good at pretending to be people she isn't, but she's never entirely sure who she really is or what she wants (besides wanting Eve, of course). She's working on that.

He's often impulsive and has a certain distaste for authority and people that are too serious.

Oksana doesn't front nearly as often Villanelle, often needing an environment she feels safe in or for Villanelle to be unable to front.

Oksana is, at her core, a traumatized child, leading her to be scared often. Most of her memories come from her and Villanelle's childhood, which is where she is stuck developmentally, often bouncing between any ages between just a few months old and as old as seven years.

She may be scared of new people and situations (and any situations that remind her too much of her past), but once she gets to know someone, she'll be just as sweet and silly, often either bouncing around, singing, playing some game she invented, or just needing cuddles.

Because of her young age and the fact that she's still learning english, she often has problems communicating, which can lead to meltdown, if not quickly resolved. She also has sensory issues due to being autistic which certainly doesn't help on the meltdown front.

Brian is much less likely to front than either Oksana or Villanelle. His role is much more internal and he's only likely to come out when neither of the other alters are able to, which is extremely rare and mostly only happens during moments of extreme stress.

He's much more paternal and capable of comforting others and he occasionally uses humor to accomplish this, but he's incredibly compassionate and unlikely to use humor as a defense mechanism. He's often able to take on more physical and emotional pain even compared to Villanelle, leaving him as a last resort for when the others can't take it anymore.

On first meeting, Brian can often come across as grumpy or distant, but this assumption is often quickly rectified with even a small bit of conversation.