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Poison Ivy is a character appearing in American comic books published by DC Comics. Created by writer Robert Kanigher and artist Carmine Infantino, she debuted in Batman #181 and has become one of the superhero Batman's most enduring enemies belonging to the collective of adversaries that make up his rogues gallery.
Arkham Asylum is a fictional forensic psychiatric hospital appearing in American comic books published by DC Comics, commonly in stories featuring the superhero Batman. It first appeared in Batman #258, written by Dennis O'Neil with art by Irv Novick. Located in Gotham City, the asylum houses patients who are criminally insane, as well as select prisoners with unusual medical requirements that are beyond a conventional prison's ability to accommodate. Its high-profile patients are often members of Batman's rogues gallery.
Harley Quinn is a fictional character appearing in American comic books published by DC Comics. She was created by Paul Dini and Bruce Timm for Batman: The Animated Series as a henchwoman for the Joker, and debuted in its 22nd episode, "Joker's Favor", on September 11, 1992. While intended to appear in one episode, Quinn became a recurring character within the DC Animated Universe (DCAU) as the Joker's sidekick and love interest, and was adapted into DC Comics' canon seven years later, beginning with the one-shot Batman: Harley Quinn #1. Quinn's origin story features her as a former psychologist at Gotham City's Arkham Asylum who was manipulated by and fell in love with the Joker, her patient, eventually becoming his accomplice and lover. The character's alias is a play on the stock character Harlequin from the 16th-century Italian theater commedia dell'arte.
The Penguin is a fictional character appearing in American comic books published by DC Comics, commonly as an adversary of the superhero Batman. The character made his first appearance in Detective Comics #58 and was created by Bob Kane and Bill Finger. The Penguin is one of Batman's most enduring enemies and belongs to the collective of adversaries that make up Batman's rogues gallery. The Penguin has repeatedly been named one of the best Batman villains and one of the greatest villains in comics. Penguin was ranked #51 in IGN's list of the Top 100 Comic Book Villains of All Time.
The Scarecrow is a supervillain appearing in American comic books published by DC Comics. Created by writer Bill Finger and artist Bob Kane, the character first appeared in World's Finest Comics #3. The Scarecrow has become one of the superhero Batman's most enduring enemies belonging to the collective of adversaries that make up his rogues gallery.
The Riddler is a supervillain appearing in American comic books published by DC Comics. The character was created by Bill Finger and Dick Sprang, and debuted in Detective Comics #140 in October 1948. He has become one of the most enduring enemies of the superhero Batman and belongs to the collective of adversaries that make up his rogues gallery.
Alfred Thaddeus Crane Pennyworth, originally Alfred Beagle and commonly known simply as Alfred, is a fictional character appearing in American comic books published by DC Comics, most commonly in association with the superhero Batman.
James W. "Jim" Gordon Sr. is a character appearing in American comic books published by DC Comics, most commonly in association with the superhero Batman. Created by Bill Finger and Bob Kane as an ally of Batman, the character debuted in the first panel of Detective Comics #27, Batman's first appearance, making him the first Batman supporting character ever to be introduced.
Clayface is an alias used by several supervillains appearing in American comic books published by DC Comics. Most incarnations of the character possess clay-like bodies and shapeshifting abilities, and all of them are adversaries of the superhero Batman. In 2009, Clayface was ranked as IGN's 73rd-greatest comic book villain of all time.
The Creeper is a superhero created by Steve Ditko and Don Segall for DC Comics. He is portrayed as a journalist and talk show host, usually living in Gotham City, who gains the ability to transform into the superhuman the Creeper thanks to experimental science developed by Dr. Yatz. First appearing in Showcase #73, his origin was revised in Secret Origins #18 in 1987, then partially revised again in The Creeper #1–4 in 1997, then completely reimagined in the six-issue miniseries The Creeper, published in 2006–2007.
Gillian B. Loeb is a fictional character in the DC Universe who serves as an enemy to Batman's ally James "Jim" Gordon in DC Comics publications.
Professor Achilles Milo is a fictional character appearing in American comic books published by DC Comics.
The Ratcatcher is a character appearing in American comic books and other media published by DC Comics, primarily as an enemy of Batman. He belongs to the collective of adversaries that make up the Dark Knight's rogues gallery. Once an actual rat-catcher in Gotham City, Flannegan sank into a life of crime. Calling himself the Ratcatcher because of his special ability to communicate with and train rats, Flannegan has used his minions to plague Gotham on more than one occasion by unleashing hordes of the vermin.
Doctor Phosphorus is a supervillain who has appeared in various comic book series published by DC Comics. Primarily an enemy of Batman, the villain exists in DC's main shared universe, known as the DC Universe.
Leslie Maurin Thompkins is a fictional character appearing in comic books published by DC Comics, usually as a supporting character in stories featuring Batman, of whom she is an ally. Created by writer Dennis O'Neil and artist Dick Giordano, she first appeared in Detective Comics #457.
Tweedledum and Tweedledee are a duo of supervillains appearing in comic books published by DC Comics, primarily as enemies of Batman.
The Dollmaker is the name of several supervillains appearing in American comic books published by DC Comics.
