Which infamous inmates populate Arkham Asylum in Joel Schumacher's Batman & Robin? While it may not have lived up to Tim Burton's two efforts, Batman Forever certainly has its merits. Joel Schumacher's Gotham City was bright, garish, and undoubtedly catered to a younger DC audience, but the film was far from an abomination. The same cannot be said for Batman & Robin. Released in 1997, George Clooney was (mis)cast as the Caped Crusader alongside Chris O'Donnell's returning Robin and Alicia Silverstone's Batgirl, and Schumacher amplified the cartoon-ish qualities of Batman Forever all the way to 11. Batman & Robin is a 2 hour blitz of bright lights, inane dialogue and action that bordered on parody. Predictably, Schumacher's sophomore Batman movie was a critical failure, and put Batman "on ice" for years.

Were Batman & Robin not an unmitigated disaster, Joel Schumacher had further plans for his DC franchise. A sequel was planned under the title Batman Unchained (or Batman Triumphant, depending on who you ask), and Schumacher promised a more mature direction featuring the likes of Harley Quinn and Scarecrow as villains. The director would later express his unfulfilled desire to make an Arkham Asylum spin-off movie also. While there's no suggestion that Schumacher's Arkham story ever came close to happening, scenes in Batman Forever and Batman & Robin serve to establish the iconic, castle-like institution in all its gothic glory.

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Batman & Robin also gives some ideas as to which villains might've appeared in a potential Schumacher Arkham Asylum movie. Some villains are explicitly seen getting locked up, while others are hinted at through Easter eggs or the film's novelization. Here's every member of Batman's Rogues Gallery propping up the cells of Arkham Asylum in Batman & Robin.

Poison Ivy

Uma Thurman as Poison Ivy in Batman & Robin

Uma Thurman's Poison Ivy provides one corner of Batman & Robin's antagonistic triangle, and is perhaps the least-worst of the bunch. Dr. Pamela Isley is a Wayne Enterprises scientist when the movie begins, specializing in plant-based research. After threatening to expose her boss' cruel, illicit experiments on human prisoners in Brazil, Dr. Isley is killed and reborn into the vengeful Poison Ivy, who would sooner see a world of lush green vegetation than suffer the greed and depravity of mankind a second longer. After witnessing the power of Mr. Freeze first hand, Ivy busts him out of Arkham Asylum and proposes a team-up, capturing Robin, despite his cunning use of rubber lips. Poison Ivy is defeated by the debuting Batgirl and knocked into a massive venus fly trap.

Batman & Robin ends with a disheveled Poison Ivy languishing in an Arkham Asylum cell, solemnly picking at a flower playing "he loves me, he loves me not." Ivy's once-elaborate hair is a mess, her glittering green costume now a bland jumpsuit, and her extravagant make-up washed away by tears, as Ivy wilts in captivity.

Mr. Freeze

Arnold Schwarzenegger as Mr. Freeze in Batman & Robin

Arnold Schwarzenegger plays Arnold Schwarzenegger in a Mr. Freeze costume, and begins the film already transformed into the icy DC villain, with Victor's tragic backstory and quest to cure his wife filled in later. Mr. Freeze enjoys two separate stays in Arkham Asylum in Batman & Robin. The first comes after a dramatic diamond heist ends with Batman chasing down the Freezemobile and apprehending the villain with a single swoosh of his cape. Victor Fries is subsequently detained in Arkham Asylum, and sits in his specially-chilled cell until the arrival of Poison Ivy and Bane, whose jailbreak is successful thanks to Ivy's chemical allure and her henchman's brute strength. After freezing Gotham City and being bested by Batman a second time in Batman & Robin's third act, Mr. Freeze is throw into Arkham once again, this time and as the cellmate of Poison Ivy. Since Freeze knows Ivy tried to kill his wife, it's safe to assume the pair's co-habitation won't be pleasant.

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The Riddler

Riddler and Two-Face Easter eggs in Batman & Robin

Jim Carrey memorably starred as Edward Nygma in Batman Forever, transforming into The Riddler via his usual facial gymnastics and comedic outbursts. In a Batman plot to make Christopher Nolan weep, Nygma used the medium of television to suck brainwaves from Gotham City's population and implant them straight into his own head, making himself smarter. A well-placed Batarang overloaded Nygma's device and fried his brain, leaving the villain defeated and landing him a one-way ticket to Arkham Asylum. The closing moments of Batman Forever see Riddler threatening to reveal Batman's secret identity, but when he's visited by Nicole Kidman's Dr. Chase Meridian, Nygma has clearly lost his sanity, dressing up in a pathetic pair of makeshift wings and proclaiming himself "the Bat-man."

Carrey dodges a bullet by not returning for Batman & Robin, but an Easter egg confirms Nygma remains a resident of Arkham Asylum. When Bane busts into Arkham's property lockup to recover Mr. Freeze's suit, a Riddler costume can be seen hanging up among the inmates' possessions.

Two-Face

Tommy Lee Jones as Two-Face smiling in Batman Forever

While the bright green design of Riddler's costume is more obvious, Batman & Robin's lockup scene also includes a reference to Tommy Lee Jones' Harvey Dent from Batman Forever. Hanging opposite from the Riddler Easter egg is Two-Face's ugly half black, half pink tiger print jacket. The Riddler's costume being in Arkham makes sense, as Jim Carrey's villain is seen incarcerated within the infamous asylum, but Two-Face dies in Batman Forever. Despite Robin's show of mercy in the final battle, Dent refuses to surrender, forcing Batman to knock him off balance by confusing Two-Face's coin toss. Since Dent fell to a watery grave, he can't be locked up in Arkham in Batman & Robin. Although his actual escape scene was deleted from the finished film, Batman Forever heavily implies that Two-Face has recently escaped from Arkham Asylum when the story begins. The jacket, therefore, must be left over from the villain's earlier stay at Arkham.

Scarecrow

The Scarecrow raising his arms in the comics

Jonathan Crane was intended as the lead villain of Joel Schumacher's third Batman entry, but Batman & Robin ensured Scarecrow's live action debut would be delayed until the following millennium, with Cillian Murphy in Batman Begins. In Schumacher's world, Crane is already an Arkham Asylum inmate in the timeline of Batman & Robin. The film's novelization by Michael Jan Friedman confirms that Dr. Crane is imprisoned and mentally broken by the walls of Arkham, but also points out that Scarecrow is the maddest of all the prisoners, and refrains from howling maniacally like the others. Like most novelizations, Friedman's Batman & Robin is canon, adding to the film rather than rewriting it. The book also reveals that Batgirl isn't Alfred's biological niece, clearing up the movie's continuity.

Related: DCEU's Flashpoint Should Revive Schumacher's Nightwing Spin-Off Idea

Mad Hatter

Mad Hatter Easter egg in Batman & Robin

Another Arkham name listed by the Batman & Robin novelization is Mad Hatter, otherwise known as Jervis Tetch. This Alice In Wonderland obsessed villain is a master of psychology and hypnotism, and is arguably the most depraved of all Bruce Wayne's adversaries. Although Mad Hatter doesn't feature in the 1997 Batman & Robin movie, the Arkham property locker scene does nod towards his presence. When Bane removes a piece of the set, the top shelf to his right includes a giant clock. Because of his Alice In Wonderland connection, a clock or watch is often found among Mad Hatter's personal affects.

Maxie Zeus

Maxie Zeus Batman villain DC

The final Arkham villain mentioned by Michael Jan Friedman's Batman & Robin novelization is the lesser known Maxie Zeus. In the DC comics, Maxie Zeus leads a criminal cult who believe that he's the reincarnation an ancient Greek god. Aside from being charismatic and intelligent, Zeus possesses little in the way of supervillain abilities, and given his outlandish character, hasn't yet made the jump to live-action. However, Maxie did feature in Batman: The Animated Series and was referenced in Gotham, among other small appearances. Given his level of delusion, it's not surprising to find Maxie Zeus in Arkham during Batman & Robin.

Bane (possibly)

Bane flexes his muscles in Batman and Robin

Batman & Robin's Bane was infamously unfaithful to the original character - a mere bodyguard for Poison Ivy, rather than the cunning, brutal character who "broke the Bat." Bane's story begins in South America when the prisoner known as Antonio Diego is selected for Dr. Woodrue's experiments with the Venom serum, transforming Diego into a masked, mindless brute. After being defeated by the combined might of Robin and Batgirl, Bane's fate at the end of Batman & Robin isn't entirely clear. If the villain didn't die, he likely would've been sent to Arkham alongside Poison Ivy and Mr. Freeze.

The Ventriloquist

The Ventriloquist in Batman TAS

The Ventriloquist is a Batman villain many believe could translate well to film, but the character has only made brief appearances in Gotham and Titans thus far. Batman & Robin implies that Arnold Wesker is already an Arkham Asylum inmate, with a doll sitting just to the left of Riddler's costume in the Easter egg-packed Arkham property locker scene. The toy bears more resemblance to a ragdoll than a ventriloquist's dummy, and certainly doesn't look like Scarface, the partner of Arnold Wesker, but Batman & Robin isn't exactly known for its comic authenticity and the Toymaker wasn't introduced until 2004.

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