Lady Bat

Lady Bat is a villain from Mermaid Melody Pichi Pichi Pure who first appears in episode 9. She is a servant of Mikeru and, despite open chest area looking flat, looks and clothing are actually is a female. Her main attack is "Ankoku no Tsubasa", a song which can send her enemies in a state of deep slumber. Also, Lady Bat is vampire (with sharp fangs, pointy ears and bat like wings) but, instead of sucking blood, she sucks memories by kissing her victim. Many debates on whether she is male or female have taken place. That is due to not only the ambiguity of the character's appearance and way of speaking but also due to it being changed in some dub version, as in some she is said to be female while in others male. However, in the Japanese version, despite the ambiguity of the character, she is said to be female.