Brainiac (character)Brainiac is a supervillain appearing in American comic books published by DC Comics. The character was created by Otto Binder and Al Plastino and first appeared in Action Comics #242 in July 1958. Brainiac is usually depicted as an extraterrestrial android or cyborg and enemy of Superman and the Justice League, and is regarded as one of Superman's archenemies, second only to Lex Luthor. He is known for shrinking and stealing Kandor, the capital city of Superman's home planet Krypton, and is even responsible for Krypton's destruction in some continuities.
Harley QuinnInfobox comics character | character_name = Harley Quinn | image = Classic and modern Harley Quinn.png | caption = The classic and modern iterations of Harley Quinn, art by Terry Dodson | real_name = Harleen Frances Quinzel | publisher = DC Comics | first_series = Batman: The Animated Series"Joker's Favor" (September 11, 1992)' | first_comic = The Batman Adventures #12 (September 1993, non-canon)Batman: Harley Quinn #1 (October 1999, canon) | creators = Paul Dini (writer)Bruce Timm (artist) | species = Human | homeworld = Brooklyn / Gotham City | alliances = Suicide SquadGotham City SirensQuinntetsGang of HarleysSecret SixJustice League of AnarchyBatman family | aliases = Dr.
Poison Ivy (character)Poison Ivy (Pamela Lillian Isley ˈaɪzli ), also known simply as Ivy, is a fictional character appearing in American comic books published by DC Comics, commonly in Batman stories. She was created by Robert Kanigher and Carmine Infantino, and first appeared in Batman #181 (June 1966). Poison Ivy is a misanthropic botanist and biochemist who possesses a poisonous touch, enhanced physical abilities, and a supernatural control over plant life. Empowered by the interplanetary force known as the Green, she uses her powers for the purposes of ecoterrorism.
KryptoniteKryptonite is a fictional material that appears primarily in Superman stories published by DC Comics. In its best-known form, it is a green, crystalline material originating from Superman's home world of Krypton that emits a unique, poisonous radiation that can weaken and even kill Kryptonians. Kryptonite radiation can emit through any element except lead. Thus, Superman has a special lead suit to protect himself from the radiation. There are other varieties of kryptonite, such as red and gold kryptonite, which have different but still generally negative effects.
