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.
Add this tidbit to the Suicide Squad speculation. According to Collider, actress Margot Robbie is on board to play Harley Quinn in the upcoming film. The character of Quinn first appeared in Batman: The Animated Series, and is a love interest/henchwoman for the Joker.