Newly introduced female character of One Piece from the new Impel Down saga.
Sadi-chan is the Chief Guard of the prison Impel Down who is a very sadistic woman that enjoys the cries and pains of the men she tortures. Her name is derived from the word sadism/sadistic.
Sadi-chan has the appearance of a blond dominatrix wearing a red devil themed costume on Halloween and tends to end her sentences with "Mmmmm~~~!♡".