Madame Macabre

Madame Macabre is a fictional business owner and a minor recurring character featured in comic books published by DC Comics. She is associated with DC's "New 52" continuity and appeared in issues of Harley Quinn, Volume 2. She was introduced in issue #2 in a story called "Helter Shelter" in March, 2014.

Overview
Madame Macabre was a resident of Coney Island. She lived in a Brooklyn apartment upstairs from Harleen Quinzel, Big Tony and the Amazing Goatboy. Big Tony would often do favors for Madame Macabre, not all of which were necessarily of the legal variety.

Biography
Big Tony sold something to Madame Macabre for use in her museum. At the close of the transaction, he told her he would throw in the "vines" for free.