Lavender

 Lavender is, simply put, a huge fucking bully. She's only really seen smiling when that joy is derived from the suffering of others

 Constantly wracked with insecurity, fear, and paranoia, which she internalizes and then projects onto anyone who's unfortunate enough to get in her way

 Hates being alone with her thoughts. If she's isolated for too long, her physical violence will become directed towards herself (i.e. bashing her head against walls, etc.)

 Openly sarcastic, has a cruel sense of humor (predictably)

 Very much dislikes monotony and will constantly be seeking out new distractions, entertainment, and sources of adrenaline. Hates being bored

 Unfortunately, alongside the tendency for violence, she's got the size and strength to back it up. She'll pummel you

 If she's really worked up, her voice can start to distort, resulting in strange pitch changes and doubling effects

 She loves small animals but won't admit to it openly