Ben McKenzie News - A new character Ecco, Jeremiah's skilled fighting proxy. Who else loved this character? She barely had any words, but in the few scenes that she was in, Ecco
Gotham Season 5: Harley Quinn's Origin Explained – Page 3
Did 'Gotham' Just Introduce Harley Quinn?
Gotham' Showrunner John Stephen Shares Why Ecco Is Their Harley Quinn