Jean

Japanese name:

ジーン

is Claymore #9 and an offensive fighter. Her "Drill Sword" technique, based on storing energy by twisting her arm 21 times and releasing it in one burst, is said to be the most destructive among her peers. She is serious and strictly honorable.

Jean and her team members (Katea, Raquel, and an unnamed Claymore) are captured by Dauf and Riful during an Awakened Being hunt, which turns out to be an ambush. After prolonged torture, she completely awakens, but is able to revert back to human form by virtue of her extraordinary willpower and Clare's help. She then decides to pay back the life debt she now owes Clare, choosing to serve her for life.

In the Northern Campaign, Miria gives her the position of division captain. Her team includes Eliza (#17), Emelia (#27), Natalie (#37), and Diana (#44). After Clare kills Rigaldo and is pleading for death due to passing her limit, a dying Jean, with a hole in her stomach area, uses the last of her strength in order to help Clare revert back, thus fulfilling her pledge. In the anime, this occurs after Clare's battle with Priscilla. No one from her team survived the Northern Campaign.

Her Awakened form resembled a butterfly with many veins connecting to its wings

wikipedia