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.
Harley next appeared in Batman #663, in which she helps the Joker with a plan to kill all his former henchmen, unaware that the punchline to the scheme is her own death. Upon realizing this, she shoots him in the shoulder. In Birds of Prey #105, Harley Quinn joins the Secret Six as the sixth member.