Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Illumination(noun) the act of illuminating, or supplying with light; the state of being illuminated. 2  Illumination(noun) festive decoration of houses or buildings with lights. 3  Illumination(noun) adornment of books and manuscripts with colored illustrations.
Harley Quinn Already Getting A Spinoff Movie, With An Important Twist. Harley Quinn has been a staple in DC Comics staple since she was introduced in Batman: The Animated Series, and this August, sheâs finally making her theatrical debut in Suicide Squad, played by Margot Robbie.
She proudly exclaims Say hello to your new and improved Harley Quinn. Harley escapes with Joker, who maniacally laughs as they speed away from the Asylum in a car. Harley Quinn. Harley Quinn starts in her first appearance on TV in Joker's Favor, as being both girlfriend and sidekick of the Joker.