The 28 hidden characters in Batman: Arkham Asylum

The Creeper

First comic appearance: Showcase #73 (March 1968)

Arkham Asylum appearance: Intensive Treatment (Utility Corridor); Penitentiary; Final Boss Fight

The connection: Jack Ryder is a news reporter on Gotham radio and television. During the investigation of an experimental scientist, he is injected with a serum that gives him unnatural strength, speed and agility. In this wild animal-like form, he is known as the Creeper. In some versions of the character, Jack Ryder and the Creeper are unaware of their shared body; in the most recent version, for example, Ryder hosts a TV show offering rewards for the capture of his alter ego.

In Arkham Asylum, you’ll only encounter Jack Ryder. He has two radio appearances, including a report about Batman’s rumored death on the island. At the end of the game, Jack Ryder is the journalist covering Joker’s rooftop theatrics.

Bizarro Fun Fact: In 1968, the Creeper starred in his own comic book series. It was cancelled after six issues.

The Ratcatcher

First comic appearance: Detective Comics #585 (April 1988)

Arkham Asylum appearance: Botanical Gardens (Ventilation System)

The connection: The Ratcatcher is like Aquaman, only much, much lamer. Instead of communicating with fish, he talks to rats. Instead of commanding a legion of sharks or sea turtles, he leads an army of furry, diseased vermin. This guy definitely got the short end of the superpower stick.

Even his gear, which is hidden in Arkham Asylum’s ventilation system, is unremarkable. Gloves and a gas mask. Most likely the same equipment he used when he worked as an actual rat catcher for the city. We still haven’t figured out what the book means, though. Any ideas?

Bizarro Fun Fact: The Rat King, a baddie from Teenage Mutant Ninja Turtles, has nearly identical powers and originated four years earlier.

The Great White Shark

First comic appearance: Arkham Asylum: Living Hell #1 (July 2003)

Arkham Asylum appearance: Medical Facility (Morgue)

The connection: Warren White was a selfish businessman who embezzled millions of dollars from his clients, poor and rich alike. In order to avoid a long prison sentence, he pleads insanity and is transferred to Arkham. As might be expected, this plan does not work out very well and, by the end of his origin story, White has had gills cut into his neck by Killer Croc and has lost his fingers, lips, ears and nose in Mr. Freeze’s refrigerated cell.

Did you wonder what the bits and pieces floating in that specimen jar were? Well, you’re probably not wondering anymore.

Bizarro Fun Fact: GamesRadar produced an entire week of coverage based on sharks in videogames. Unbelievable, but true!

Humpty Dumpty

First comic appearance: Arkham Asylum: Living Hell #1 (July 2003)

Arkham Asylum appearance: Botanical Gardens (Flooded Corridor)

The connection: “All the king’s horses, and all the king’s men, couldn’t put Humpty together again.” This centuries-old nursery rhyme clearly inspired the creators of Humphry Dumpler, a recently introduced Batman character. He’s not only shaped like a fat, bald egg – he also loves breaking things so that he can then try fixing them.

He usually fails. And when Humphry “broke” his grandmother so that he could sew her body’s pieces back together with shoelaces, he ended up in Arkham. If these broken toy soldiers are indeed his handiwork, his repair skills haven’t improved a terrible amount.

Bizarro Fun Fact: Humpty Dumpty’s parents were crushed and killed by a falling Christmas tree.

Amadeus Arkham

First comic appearance: Batman #258 (October 1974)

Arkham Asylum appearance: Arkham East (Cemetery); Arkham Mansion (North Corridor)

The connection: Amadeus Arkham is the original founder of the asylum in which the game takes place. His mother was mentally ill and, after her mercy killing at his hands, he converted their former home into a treatment facility. Not long after the asylum’s opening, however, he was visited by horrific tragedy and became an insane resident himself. You can see his gravestone in the Arkham cemetery, or visit the cell where he resided after his descent into madness. You can also, of course, listen to his entire tragic story as you collect the Chronicles of Arkham.

Bizarro Fun Fact: There’s nothing “fun” about Amadeus Arkham. Read the next two entries for proof.

Martin “Mad Dog” Hawkins

First comic appearance: Arkham Asylum: A Serious House on Serious Earth

Arkham Asylum appearance: Botanical Gardens (Flooded Corridor)

The connection: Okay, this is pretty brutal… but it’s also one of the cleverest references in the game. Mad Dog Hawkins is an escaped convict who breaks into Amadeus Arkham’s home and rapes – then murders – his wife and daughter. Sadly, that’s not the worst part. He also scratches his name into the wife’s body and decapitates the daughter, placing the latter’s head in a dollhouse for Amadeus to discover.

So how does Batman: Arkham Asylum, a Teen-rated game, pay tribute to these terrifying acts of violence? You’ll come across a statue of a woman in the Botanical Gardens. The inscription plate, which pays tribute to Amadeus’s wife, has been vandalized with the same words that adorned her body… the head has been chopped off and deposited in the flowerbed below. Ouch. No wonder the poor old man lost his mind, eventually killing Mad Dog through excessive electroshock.

Random fun fact: In the Warden’s office, there’s another inscription plate on the wall, this one seemingly written to Amadeus’s daughter.

The Spirit of Arkham

Astoundingly, the story of Amadeus Arkham is not finished. Collect enough of his chronicles and you’ll realize that the founder’s spirit is living on in another, still living man. The voice you assumed was that of Amadeus alone begins retelling stories of Harley Quinn’s turn to evil, Killer Croc’s capture and the Joker’s escape. These events all occurred long after the original Arkham’s death.

So who is carrying on his work, or at least believes he is doing so? Who is now planning to kill inmates rather than treat them? Stop reading now if you want to figure out the mystery on your own…

Taking yet another cue from the graphic novel A Serious House on Serious Earth, the game reveals that the “spirit of Arkham” has taken hold of the current administrator. In the Arkham Asylum comic, that’s Dr. Cavendish, who dons Amadeus’s mother’s wedding dress and battles Batman with a razor knife. In the Arkham Asylum game, it’s Warden Sharp, who disappears from the asylum altogether, leaving only a cryptic message behind.

Above: Arkham’s biggest mystery – solved 

Mystery One-Armed Inmate

Finally, you may have noticed this super creepy dude pacing and muttering to himself in the same room as Clayface. He’s way too detailed and unique in appearance to be a random NPC, but we couldn’t match him to a DC character no matter how hard we tried. Then we remembered the Arkham Asylum contest announced last year – the winner’s face would be rendered somewhere in the game. That “somewhere” is here. Interestingly, if you scan the inmate’s skeleton with Detective Mode, you’ll see that his missing limb isn’t missing at all. He’s just hiding it behind his back. Sorry for calling you “super creepy”, contest winner guy, but that’s just weird.

Also, we’re totally jealous.

Sep 02, 2009

Batman: Arkham Asylum – Riddler Guide
Our walkthrough to all 240 challenges! Every map, every trophy, every interview, every chronicle and more

Batman: Arkham Asylum – Boss Guide
How to go toe-to-toe with the biggest villains and walk away (relatively) unscathed

Batman: Arkham Asylum – Super Review
Gotham is the new Rapture


  • BrickLovesLamp - November 4, 2013 12:58 p.m.

    A lot of these villains ended up in either Arkham City or Arkham Origins. So now I'm convinced that any of the villains who didn't end up in one of those games will be in the next Arkham game, if there is one.
  • Rino98 - March 10, 2013 4:35 p.m.

    For the Ratcatcher- I think you can find the same book in the mad hatter's hideout in arkham city, door side of the table, on the ground.
  • coyoteDUSTER - October 14, 2011 9:16 p.m.

    "You won't send me to da coolah."
  • TheBiggestE - February 20, 2011 6:27 p.m.

    I think the book shown with the rat catcher's effects was "The Pied Piper"
  • Tendorphin - December 13, 2010 5:27 p.m.

    The book in the ratcatcher scene is probably a reference to the pied piper...he got rid of all of the rats in a village by hypnotizing them, and when the town didn't pay him he did the same thing to all of their children
  • nikrusty - August 19, 2010 6:28 a.m.

    woah cool, especially about "Mystery One-Armed Inmate". I was wondering who that was! It would be nice to see his real face and the rendered 3D version
  • Lolspamm0r - August 12, 2010 5:09 a.m.

    Another fun fact: Arkham Asylum is inspired by the asylum that goes by the same name in most of HP Lovecraft's works.
  • Ganonpork - August 10, 2010 9:21 a.m.

    XD that last guy was scarier than anything in Resi
  • Darkhawk - August 10, 2010 2:52 a.m.

    The Creeper had a 12 issue series in 1997, as well. In one of the storylines, he comes to Arkham to interview the Joker, only to have the Creeper persona take over and help Joker let the villains loose and take over the asylum.
  • chris4man - July 14, 2010 10:37 p.m.

    This article was awesome man , could u do the rest of the characters u forgot atleast the main ones in the game like harley , oracle, ivy, croc, crane,nigma, mr j etc , the more the better
  • nikeiden - May 19, 2010 9:21 p.m.

    The collectors edition of this game looks so cool it has the game, a behind the sceans dvd,A 14in colapsable batarang, and a journal of carecters that you find by doing the riddles
  • reaperman22 - April 6, 2010 6:01 a.m.

    i want to know who monty is as i just found the writing on the glass but i guess nobody knows as this is the place google took me
  • nikeiden - February 25, 2010 9:27 p.m.

    This game is the bomb. AvP game looks awsom too
  • GibsonSG - December 30, 2009 10:44 p.m.

    You are absolutely right videogameking, it does look like gordon freeman!
  • Axcleblade - December 17, 2009 12:28 a.m.

    Damn, I missed a lot. And these comments talk about multiple endings? Thank god for Youtube.
  • TheQu - December 7, 2009 4:17 a.m.

    Not that anyone is going to be reading this so far after the fact, but the Ratcatcher's book is likely a reference to Gilbert Ralston's book, The Ratman's Notebook. You may know it as Willard, as its been filmed twice. Willard was probably the inspiration for the Ratcatcher too.
  • kidcomic - October 30, 2009 8:18 p.m.

    has anybody found the hidden sevard head?if not i'm not kidding theres a sevard head sitting in a water filled jar in batman arkham asylum.(i'm seriosly not kidding)
  • Blinder - October 22, 2009 3:32 a.m.

    Here's a little fun fact I know of. Burgess Meredith had quit smoking before playing the part of The Penguin for the TV series. When he had to cough he turned the sound into the "Quack, Quack" and it stuck.
  • DryvBy - October 1, 2009 3:06 p.m.

    this is pretty cool stuff.
  • uglynarcissist - September 25, 2009 9:03 a.m.

    I love this article! There's so much I missed, so I'm totally going to have to replay. But the book found with the Ratcatcher's gloves is probably a copy of Ratman's Notebooks, the book that the movie Willard was based off of. Just fyi.

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