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This Mister X (there are many Mister Xs in the comics) appears in one 1950 issue.

His appearance is only notable since this story is a foundational tale of Catwoman (Selina Kyle).

This small profile is thus meant as a sample mob-boss-with-a-gimmick from this era. Mostly for those who need such a figure for a story/RPG scenario.

Mister X’s gimmick was used by several other fictional mob figures. The classic one is the Big Man (Frederick Foswell), who appeared in 1960s Spider-Man stories.



  • Real Name: Unrevealed.
  • Other Aliases: Mousey.
  • Known Relatives: None.
  • Group Affiliation: His own mob.
  • Base of Operations: Gotham City.
  • Height: 5’4″ (1.62m). Weight: 90 lbs. (41 Kg.).
  • Eyes: Unrevealed. Hair: Dark brown (balding).

Powers & Abilities

Mousey is an experienced street criminal. He understands how the underworld works, is streetwise, and knows how to plan and carry out dastardly criminal ploys.

However, he is physically unimpressive, and has next to no charisma. This attracts endless bullies, especially given the people he frequents.

Other assets

As part of his plot, Mousey apparently trained himself to speak in a different, deeper voice than his normal tone.

Mousey has a pair of shoes with a secret compartment. This is presumably because they have height-boosting insoles, heels or some such. He usually keeps a file hidden therein, to work his way through prison bars.

He also illegally packs heat. Presumably a compact revolver in a so-so calibre.

Mister X (DC Comics) (Old Batman/Catwoman enemy)


In 1950, a small man nicknamed “Mousey” was a shady type in Gotham. He incessantly tried to join a real mob, pestering made men in underworld hangouts and trying to make connected friends.

Since everybody was making fun of his slight stature, this didn’t work.

Mousey procured a veil-like mask, stilts, padding, a sort of corset, etc.. Using these as a disguise and speaking in a deeper voice, he could become “Mister X”.

In the buff

Mister X was exceptionally tall and broad-shouldered. This apparent wall of muscle was about 6’3″ (1.90m) and 260lbs (118 Kg.), which was particularly impressive in 1950.

Mister X was far more intimidating than Mousey, and soon came to control his own gang.

To throw off any suspicion, he continued to be seen as Mousey. He even kept asking to join the Mister X mob, which Mister X’s men found ridiculous.

Mister X (DC Comics) (Old Batman/Catwoman enemy) - Mousey

I want muscle, ooh ohh ohh

Mister X’s mob launched a successful crime wave. They were daring, the crew was big tough guys who didn’t afraid of nothing, and they used flashy gear such as huge cars and dynamite.

But Mousey knew that he could only go so far. He thus had his men spectacularly bust Catwoman out of prison.

He offered her to become his partner-in-crime, and plan their operations. His angle was that Catwoman was known for working non-lethally, and that using her methods meant less heat for him and his crew.

However, Catwoman accidentally recovered her memory (long story), and became a covert agent of the police. Mousey accidentally learned of this, but was then jailed for carrying an unregistered firearm.

And it would’ve worked too…

While Mousey was busy filing loose his cell’s bars, Catwoman and his gang ran two heists.

The mobsters were used to working without contact with Mister X, for security reasons. But after capturing Batman and Robin, Catwoman demanded to see Mister X to negotiate a bonus.

Mousey escaped just in time for the meeting to take place. He ordered his men to kill Catwoman, Robin and Batman. However, the Dynamic Duo escaped from their death trap, then rescued Catwoman from hers.

Together they stopped Mister X, having deduced his true identity.


Mousey was bitter, and tired of being treated like faeces just for being small.

He seemed to be smart and capable, though not as intelligent and imaginative as Catwoman.

Unlike many criminals he was cautious, and preferred long-term thinking.

DC Heroes RPG

Mister X

Dex: 02 Str: 01 Bod: 02
Int: 04 Wil: 04 Min: 04
Inf: 01 Aur: 01 Spi: 03
Init: 007 HP: 015


Artist (Actor): 05, Detective (Legwork): 03, Vehicles (Land): 02, Weaponry (Firearms): 03

Bonuses and Limitations:

Artist (Actor) only for his Mister X disguise and voice.


Area Knowledge (Gotham City), Familiarity (Gotham underworld).


Street (Low), Underworld (Low).


Creepy Appearance, Misc.: Mousey’s body mass is 1 AP.




Professional criminal.




  • Snub-nosed revolver [BODY 02, Projectile weapons: 03, Ammo: 06, Miniaturisation: 01, R#04].
  • Hidden file [BODY 01, Miniaturisation: 01] and TRICK SHOES [BODY 01, Thief (Concealment): 03].
  • MISTER X SUIT [/BODY/ 04 /INF/ 04 /AUR/ 03, Growth: 01. Misc.: Growth is Always On, but is purely cosmetic. The SUIT can only be worn by somebody with Mousey’s vitals.]

Mister X (DC Comics) (Old Batman/Catwoman enemy) - suspicious

DC Adventures RPG

Mister X — Averaged PL 3

-1 00 00 01
00 01 01 -1


Mister X Schtick • 003 points, Removable (requires Mister X disguise) • Descriptor: Skilled
– Confident Performance — Enhanced PRE 2, Enhanced Skill (Intimidation 3, Persuasion 1).

Combat Advantages:

None demonstrated.

Other Advantages:

Benefit: Unrecognizable (+5 circumstance bonus to Deception checks to disguise himself as Mister X and to be unrecognizable as Mousey), Minion 3 (a thug, Mister X can be assigned as many thugs as needed for the scenario).


Close Combat: Unarmed 1 (+1), Deception 2 (+1, +3 as Mister X), Expertise: Criminal 3 (+4), Insight 2 (+3), Intimidation 0 (+4 as Mister X), Investigation (Limited 2, gather information only) 2 (+3), Perception 3 (+4), Persuasion 0 (+2 as Mister X), Ranged Combat: Guns 2 (+3), Vehicles (Limited 2 to land vehicles only) 2 (+3).


Padded and reinforced Mister X suit Protection 4, Enhanced Fortitude (Quirk, not versus diseases or airborne hazards) 5 • 008 points
Snub-nosed revolver Ranged Ballistic Damage 2, Diminished Range 1 • 003 points
Hidden file.
Trick shoes (+2 circumstance bonus to hide small objects in the heel).


Initiative +0
Unarmed +1, Close, Damage -1
Revolver +3, Ranged, Damage 2


Dodge 001
Fortitude 005 (0 without suit)
Parry 001
Toughness 004 (0 without suit)
Will 003

* Without Defensive Roll.


  • Unimpressive Mousey is a small man with an odd appearance. He is frequently bullied.
  • Mousey Mousey is diminutive (actually a mass rank of 0).
  • Secret Identity Mousey is Mister X, the leader of a somewhat successful criminal operation. Sometimes he appears as Mousey and attempts to join his gang, to throw off the scent.
  • Packing Heat Mousey’s ownership of a firearm is illegal.

Powers Levels:

  • Trade-off areas. Attack/Effect PL 003, Dodge/Toughness PL 003, Parry/Toughness PL 003, Fort/Will PL 004.
  • Points total 021 Abilities 002, Defences 004, Skills 008, Powers 003, Devices 000, Advantages 004. Equiv. PL 002.

Writeups.org writer avatar Sébastien Andrivet

By Sébastien Andrivet.

Source of Character: Batman vol. 1 #62.

Helper(s): M&M stats by Pawsplay.

Writeup completed on the 4th of November, 2018.