Sadi  

, サディ

Sadi, the head of security at Impel Down, takes her name from the term "sadism." She has a dominatrix-like appearance and wears a skimpy outfit with devilish themes. Her attire includes a pitchfork and horn-like headgear. Sadi's long hair covers her eyes, and she adorns herself with candle-shaped earrings. Sadi is known for her sadistic tendencies, enjoying inflicting pain and suffering on others, including Marine allies. She takes great pride in Impel Down's defenses and refuses assistance from the Marines. Sadi often adds an "mmm--!" to her sentences and prefers to be addressed as "Sadi-chan." As a chief guard of Impel Down with authority over subordinates, Sadi commands the Four Demon Guards. She carries a pitchfork that conceals a custom-designed whip, which she can use effectively.