M, or Penance (Monet Yvette Clarisse Maria Therese St. Croix), is a superheroine appearing in American comic books published by Marvel Comics. First appearing in The Uncanny X-Men #316 (September 1994), the character was created by Scott Lobdell and Chris Bachalo. Monet St. Croix is a mutant with a variety of superhuman abilities, including enchanced physical and mental capabilities, flight, and telepathy.
The character is primarily depicted in association with the X-Men, also having joined superhero teams such as Generation X and X-Factor Investigations. The character and her siblings have a complicated history in the comics, with her brother Emplate transforming her into the mute Penance and her sisters taking her place, before being freed.
Publication history Monet St. Croix (Nicole and Claudette merged) first appeared in X-Men #316 (September 1994), created by Scott Lobdell and Chris Bachalo. Monet in the form of Penance first appeared in Generation X #1 (September, 1994).
The twins merged into Penance in issue #40, and all three girls were freed from Penance in issue #57. The form left behind, now known as Hollow, also operated normally after this.
Monet appeared as a member of X-Corps in Uncanny X-Men #403-406, and in #410-412. Monet joined the cast of X-Factor (vol. 3), beginning with issue #2. She joined an all-female X-Men team in X-Men (vol. 4) #7, which one survey of Muslim representation in comics credited with helping open the door for further women-of-color-led titles. The series ended with issue #26, from which Monet joined Uncanny X-Men (vol. 4). She appeared in Generation X (vol. 2) and Weapon X (vol. 3).
During the Krakoan Age, Monet appeared in a number of different titles, notably X-Corp (vol. 1), Uncanny X-Men (vol. 4), and X-Men Unlimited Infinity Comic #50-54 as a candidate for the X-Men vote. She was also part of the Heir of Apocalypse storyline after the Fall of X.
Fictional character biography Early life Monet St. Croix was born in Sarajevo, Bosnia, and is the second child of Afro-Monégasque ambassador Cartier St. Croix and his Algerian wife. Monet was raised Muslim and grew up pompous and spoiled as a result of being the favored child of her father.X-Factor #217 (May 2011) Monet's brother Marius, also known as Emplate, is banished from the St. Croix home shortly after his mother's death, but returns after learning dark magic and requests that Monet join him in conquering another dimension. Monet rejects Marius' offer, leading him to transform her into a creature dubbed Penance. Monet's younger twin sisters, Nicole and Claudette, banish Emplate to another dimension. Monet follows Emplate in an attempt to return herself to normal, but is enslaved, becoming a regular source of bone marrow for Emplate.Generation X #40 (July 1998)
Afraid their father would break down after the loss of his favorite child, Nicole and Claudette decide to impersonate her in their fused form. This version of Monet would have been identical to the original, but shares Claudette's autism, occasionally leaving her in catatonic stupors. While the twins are impersonating their sister, they are among the mutants captured by the alien Phalanx.Uncanny X-Men #316 (September 1994)
Generation X After being rescued from the Phalanx by Banshee and Emma Frost, the mutants form the team Generation X, with Banshee and Frost training them. Shortly after the school opens, Emplate attacks some of the students at the airport, but is chased away by the newly formed team. Shortly after returning to the school, Gateway reappears on the front lawn with Monet, still trapped in the form of Penance.Generation X #1 (November 1994) Beast later diagnoses "Monet" with autism.Generation X #21-23 (November 1996 - January 1997)
M/Penance/M-Twins
Monet, alongside most of Generation X, are later attacked by Operation: Zero Tolerance. Banshee, Emma Frost, and Penance meet Emplate's henchman D.O.A., who arranges a deal: Monet's location in exchange for Penance.Generation X #29 (August 1997) After being attacked by Prime Sentinel forces, Synch synchronizes with Monet and learns her nature as a gestalt being. Skin's cousin Gil sets off a huge explosion to destroy the Sentinels, which separates Nicole and Claudette and leaves them comatose.Generation X #31 (October 1997)
Soon after, Emplate returns and fuses with the M-twins, creating a new persona called "M-Plate". When the three of them separate, the twins finally learn what their brother did to Monet. Synch convinces Nicole to reveal the truth to the rest of the team. The twins merge with Monet, restoring her human form and trapping the twins inside Penance.
Returning to normal, the traumatized M becomes self-reliant, harsh and defensive, causing her to clash with many of her teammates, except for Synch, with whom she starts a brief romantic relationship. When Emplate returns, Jubilee causes an explosion which separates the twins and makes Penance a separate entity.Generation X #58 (December 1999)
Final days of Generation X
When Monet returns, she and Synch continue to grow close. Monet is devastated when Synch sacrifices himself to stop a bomb placed in the academy by Emma Frost's sister Adrienne.Generation X #70 (December 2000) After the incident, the team questions Emma's leadership abilities after learning that she has killed Adrienne in retribution for Synch's death. The school closes when the students decide that their instructors are no longer fit to teach them.
X-Corps/X-Corporation After Generation X disbands, M temporarily joins Banshee's militant X-Corps to keep an eye on him. However, the X-Corps are soon destroyed by Mystique, leaving M to join the X-Corporation's European branch in Paris.
X-Factor Investigations
Following the events of House of M and the shutdown of X-Corporation, M joins X-Factor Investigations, a private detective agency run by Jamie Madrox.
Monet has a brief relationship with Madrox, but this falls apart when Siryn reveals she is pregnant with Madrox's child. Monet and Siryn become close despite this.
Operating out of Detroit and return to New York City Shortly after the events of "Secret Invasion", Monet takes part in a rescue mission for Darwin, is present at the birth of Siryn's child,X-Factor (vol. 3) #36-39 (December 2008 - March 2009) and taking down a shipment of weapons designed to take out mutants.X-Factor (vol. 3) #41 (May 2009) In the aftermath of the battle with Cortex (an evil duplicate of Jamie Madrox), X-Factor unofficially splits due to tensions between Madrox and Siryn. Strong Guy and Madrox move back to New York while Monet, Darwin, and the others stay in Detroit to work under Siryn.
Monet is shown to be dying from a serious brain injury when she battles Pluto, who severely beats her, when Wolfsbane's son Tier arrives and kills Pluto. M dies from her injuries,X-Factor #255 (July 2013) but is resurrected by Strong Guy shortly afterward when he becomes Lord of Hell.X-Factor #256 (July 2013)
All-New, All-Different Marvel In the wake of the M-Pox crisis, Monet joins Magneto's team of X-Men, with the goal of protecting mutantkind at any cost. During this time, she developed a love-hate relationship with the reformed Sabretooth.Uncanny X-Men (vol. 4) #1 (March 2016) While investigating a mysterious illness and series of abductions that befell the Morlocks,Uncanny X-Men (vol. 4) #6 (June 2016) M and Sabretooth encounter Emplate.Uncanny X-Men (vol. 4) #7 (July 2016) Emplate possesses M, cursing her with his hunger for bone marrow. Sabretooth tells M that her secret is safe with him and that she can feed on him whenever she needs.Uncanny X-Men (vol. 4) #10 (September 2016) M eventually breaks free from Emplate's control, curing herself of her condition.Generation X (vol. 2) #87 (April 2018)
Krakoan Age M is later seen living in the sovereign nation of Krakoa, constructed by Professor X as a mutant homeland. She is among the X-Men selected to battle Orchis before they can bring the Sentinel Mother Mold online. During the battle, M is killed by Orchis soldiers.House of X #4 (September 2019) She is quickly resurrected by the Five.House of X #5 (September 2019)
Claudette and Nicole St. Croix also appear as citizens of Krakoa, both having assumed forms similar to Penance.The New Mutants (vol. 4) #1 (January 2020)
During the Krakoan Age, Monet joins X-Corp, now operating as a business front for Krakoa,X-Corp #1 (July 2021) and the Avengers Unity Division.Uncanny Avengers (vol. 4) #1 (October 2023) She is a candidate for the X-Men vote, but loses to Firestar.
Fall of X and Post-Krakoa During the Fall of X, Monet briefly battles Black Panther, and takes part in a tournament to determine Apocalypse's heir. After the fall of Krakoa, Monet is imprisoned in the X-Mansion, which has since been repurposed as a mutant prison run by Corina Ellis.Uncanny X-Men (vol. 6) #20 (November 2025) She is later freed, and becomes leader of the Louisiana team of X-Men, alongside her lover Quicksilver.
Powers and abilities Monet exhibits superhuman prowess in virtually all aspects. She boasts superhuman strength, invulnerability, agility, dexterity, speed, swift reflexes, and impeccable balance. X-Men's Bishop highlighted that Monet holds a "superior rating" across all human physical categories. She is almost invulnerable, capable of enduring direct hits from firearms at a distance and even powerful strikes from characters like Hulk. Much like Hulk, Monet has enhanced healing abilities, allowing her to rapidly recover from injuries. She also displays a heightened resistance to toxins, diseases, and aging. Additionally, Monet has telescopic and night vision, complemented by heightened auditory senses.
Monet possesses an eidetic memory and demonstrates intuitive skills. Psionically, she can levitate and propel herself through the air, achieving supersonic flight speeds close to Mach 3. She has occasionally displayed telekinetic abilities, such as deflecting bullets and emitting thought waves as concussive blasts.X-Factor #218 (June 2011)X-Men (vol. 4) #7 (January 2014)
As a telepath, Monet can read minds, project her thoughts into others, and shield her mind against telepathic intrusion. Offensively, she possesses limited capabilities such as mind control and memory manipulation. However, the range of her telepathy spans only a few feet around her. She can also perceive mutant auras.
Monet and her siblings have the unique ability to merge, forming different combinations with varied powers. The twins, Nicole and Claudette, find this merging process particularly seamless. Monet has also gained the ability to transform fully or partially into her Penance form, giving her diamond-hard skin and powerful claws.
In addition to her powers, Monet is adept in hand-to-hand combat and possesses a genius-level intellect.
Penance
Hollow (formerly called Penance) is a character associated with the St. Croix family who first appeared in Generation X #1 (November 1994), and was created by Scott Lobdell and Chris Bachalo. It is a mindless body in which three members of the St. Croix family have been trapped in for some time. Hollow has red skin and rarely speaks.
The powers of the different hosts/prisoners of the Penance form vary, but commonly include durable skin and large claws. Hollow also possesses superhuman agility, as she usually moves around by crouching and padding and leaping on all fours; she has been shown on occasion to use her feet to grab and grip objects and people.
The original creative team behind Generation X, Scott Lobdell and Chris Bachalo, intended Penance to be named Yvette and originate from Yugoslavia.Generation X, Ashcan edition (1994) This was never directly revealed in the comic, with Penance's identity as Monet St. Croix being made by the subsequent creative team.
Reception In 2014, Entertainment Weekly ranked M/Penance 72nd in their "Let's rank every X-Man ever" list.