Lana Banana on Twitter: "~An Ecco Of Harley~ What do you think of our little Harley wannabe? I personally LOVE her and her portrayal reminds me so much of Arkham Asylum Harley (
Gotham's Ecco Was Largely Inspired by Harley Quinn in 'Batman: The Animated Series'
Gotham' Showrunner John Stephen Shares Why Ecco Is Their Harley Quinn