Dietrich was Claymore No. 8 of the final generation. She has demonstrated great cunning by tracking Helen and Deneve as they travelled west. It is also added that she kept her current pace while tracking their Yoki. However, it can also refer to an actress typecast into the roles of strong, independent, but emotionally cold women.

Dietrich herself tries to keep up such a facade, but breaks down emotionally at Rabona, when Miria reveals the Organization's darkest secrets. Dietrich appears to be in her mid-teens and is one of the smallest Claymores. Her straight, pale hair is worn in two bunches, much like Luciela's. She wears the standard Claymore uniform and has silver eyes. Dietrich possesses a strong sense of duty. She also possesses great honesty. She is willing to tell The Organization about the existence of the Seven Ghosts if asked about it. However, despite her fierce loyalty to The Organization, she feels she must help Helen and Deneve as a way to pay back the debt she owes them. She appears to have good deductive skills and a serious mind because she immediately analyzes Helen and Deneve's goals and then prioritizes the safety of her teammates. She has been described as "persistent" and "following instructions to the letter" by Galatea , who calls her "Tracker Dietrich,"