[[One Piece]] character. 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~~~!♡".
sadi-chan