Karlach being a lovely, sunny person who can and does unleash brutal violence. And that violence is a very important part of who she is and is not uncomplicated. She's proud of it but also she was taken advantage of because of it; her body is her weapon but also her body is falling apart. She's so optimistic, she's so terrified of death, she will make the best of the time she has, she will fight tooth and nail to survive, she is content, she is desperate, she may or may not have gone a decade without reading a book, she is SO touch-starved, she swears like a sailor. Her teddy bear's name is Clive.