Many peg the eldest Kerrigan as mysterious. She’s been confined to the walls of the castle for far too long. Leaving her left out of a lot of things that are happening, she gets most of her information from the guards and maids of the house. Though she has been known to sneak out, bravery isn’t her best trait so she always comes back almost as quickly as she left. She’s endured a lot of verbal and physical abuse from her mother, leaving her skittish. Marlowe is known to flinch or shy away from people who raise their hand or voice at her. She’s known to be nervous if she’s done something she not suppose to, she’ll stutter or start to ramble. This also leads to her apologizing profusely for small things, which tends to get annoying - causing her to apologize even more. She’s much like a child, she must warm up to you before she truly opens up. Leaving many to think she is stuck-up like her mother, though it is the complete opposite. Her mother says she’s too much like her father when it comes to trust. They trust too easily, but once that trust is broken then they’ll never forgive and never forget.
Due to her years of being locked away, the Princess has this gnawing curiosity. She’s always the one asking questions. She’s like that toddler that continuously asks, “Why?” This curiosity has led to many of her more prominent scars and aggressive scoldings. She’s not one to think before acting, especially not one to think before she speaks. The eldest Kerrigan isn’t a shining example to her younger brothers, she more of a, “Don’t do what she did, and you won’t get in trouble.” Much to her mother's disapproval the child has always been quite good at social interactions like her father, she's found that out after she’s had one too many glasses of wine. The Princess is equipped with quite the imagination and is a spirited story-teller. She’s learned most of her stories from the help around the castle - another thing that leads to criticism from Lady Kerrigan. Being she's always held her to such to such high expectations, Mar was set up for failure leading to her seeking approval from anyone. She has never voiced this aloud though, she doesn’t want to give in to her mother.
Another trait she’s inherited from her father is his wit. She’s very quick on her feet when it comes to comebacks and quick conversation once she's comfortable around you. Her forte is not action, but commentary. It’s the one thing her and her father seem to share openly - both enjoying their private conversations without her mother around. Isaac being a perceptive, restrained, and well-informed King is sometimes reflected in his only daughter. Marlowe seems to see the world differently, but she knows when to be reserved (just when her mother is around). The years of learning have also increased her intelligence. Her father’s relentless clear-sighted realism has caused her to be bias in some aspects of life, leaving her rather closed minded.
Marlowe has been shaped through the maids and guards of the house as well. She’s tender and gentle when it comes to caring for someone she’s fond of. The maids have brought out the warmth within Mar. She easily grows attached to people now, even through it’s clear who her favorites are. Surprisingly, she has quite the large heart. But along with a big heart comes her naiveness. She’s gullible and has been persuaded to believe some of the tallest tales the guards have told. Marlowe tends to believe almost anything, exploiting her innocents. She may have a rough exterior and a reputation that precedes her - but she’s actually a sweetheart who is still learning.

This can be super brief. Some characters might not have an extensive background compared to others.