"You came to this beautiful woman 'cause you had a problem. A Penguin problem. Pax Penguina was gonna last. But Sofia had an idea... What if there was a killer, real vicious son of a bitch, huntin' the police? All slice an' dice."
—Lazlo Valentin reveals his identity to Jim Gordon[src]

Lazlo Valentin was a contract killer and assassin hailing from the southern United States that impersonates serial killers. He was hired by mob figure Sofia Falcone in a conspiracy to end Oswald Cobblepot's control over the Gotham City Police Department and in turn aiding in her rise through the criminal underworld. He donned the persona of Professor Pyg, a serial killer with a troubled past that targets corrupt police officers and wealthy civilians for revenge, sometimes dressing them in pig flesh. This served as a means to turn the police department against Cobblepot and support detective Jim Gordon's promotion to captain. Valentin was ultimately murdered by Falcone to avoid her conspiracy from being leaked to the public, with Gordon claiming that he was killed in a shootout.



South of the United States, Lazlo Valentin operated as a contract killer and serial killer, where he would mimic other serial killers and undergo different identities. In one of these instances he committed several murders down south, but managed to evade custody and changed his face with the use of surgery and metal plates under his skin.

Terrorizing Gotham

Ten years following the murders down south, Lazlo was hired by Sofia Falcone (the daughter of retired mob boss Carmine Falcone) in order to help in her scheme to take over the Gotham City criminal underworld and build back up her father's fallen criminal empire. Lazlo headed to Gotham, where he undertook the identity of the Pyg and used another serial killer's MO by targeting corrupt cops, which resulted in him murdering them and covering their heads with the heads of severed pigs.

Sent to Arkham


Lazlo Valentin listening to "Ave Maria" at Arkham.

Lazlo Valentin was then locked away at Arkham Asylum. During his stay, he was allowed to spend some time in the facility's recreation room along with fellow prisoners. There Valentin exchanged the vinyl record a gramophone was playing and instead started playing the vinyl disk "Ave Maria". Even though Pyg and several other inmates enjoyed the music, one of them spoke to Lazlo, telling him that he doesn't like that song since his mother used to beat him to it and it also played when he killed her. He afterwards ordered Professor Pyg to turn the music off and threated to kill him otherwise. However, Valentin stayed calm and slowly turned to the man, further provoking him by asking why his mother used to beat him, questioning if it was because he was a naughty boy or him stuttering. This caused the inmate to punch Lazlo in the face, causing the metal plates under his skin to dislocate and therefore disfiguring his jaw and cheek. Not impressed by this incident, Pyg declared that he really wished the other prisoner wouldn't have done that before shoving his metal jaw back into his original place. Lazlo then stated that he paid a fortune to look this good and afterwards turned back to the gramophone. Heavily outraged, the inmate run towards Professor Pyg who quickly broke one of the vinyl disks in half to ram one fragment into the man's chest before he could even reach Lazlo. Valentin then calmly flipped the other half and thereupon slit the fellow inmate's throat who collapsed dead on the ground. Pyg afterwards turned back to the gramophone, further enjoying "Ave Maria" while the guards are still trying to enter the room as the gate is held shut by another prisoner.[1]


Lazlo Valentin shoots Sofia

Lazlo shoots Sofia Falcone.

Shortly after, Carmine Falcone came back to Gotham to prevent a gang war between Cobblepot and Sofia. He met with Sofia and the Sirens at the Falcone Manor to inform his daughter that he came when Penguin called because she was going to lose the war and has brought disgrace to the Falcone name. To punish her father for not supporting her, Sofia ordered a hit on her own father carried out by Lazlo Valentin and her other henchmen. As Carmine was about to leave the Falcone Manor along with Sofia to take her back to Miami, a black van drove by and a shooter attacked the group, killing Don Falcone. To prevent Sofia from being suspected, Lazlo was hiding behind trees and bushes to shoot Sofia in none vital areas of her body to ensure her survival. Sofia Falcone then made use of this incident to establish Penguin as the one who ordered the hit and thereby convinced James Gordon to hunt, arrest and imprison him.[2]


The Pyg’s true personality is difficult to pin down since much of what people know of him is really different disguises, façades, and impersonations. However, what is clear is that Lazlo Valentin has somewhat of a fragile ego, which is shown when Jim Gordon tells him no one will remember his reign of terror on Gotham.


  • High-level intellect: Lazlo possesses a far above average intelligence. He would stage his murders to make them appear as if then had been committed by other killers.
  • Master tactician: Lazlo is very skilled at making plans and therefore was capable of escaping Arkham Asylum. He was able to methodically create traps that would lead to his victims being captured or killed. He was also attacked a black market surgeon to trick the police into thinking he had his face altered following his escape from Arkham.
  • Indomitable will/High tolerance for pain: Lazlo has shown to never give up on pushing through his goals even if he has to violate himself to accomplish them, as shown when he stabbed himself with a knife to outsmart the GCPD.
  • Weapons Proficiency: Lazlo is proficient in the use of various knifes and butcher axes.
    • Skilled knife-thrower: Valentin is skilled at throwing knives, such as when he threw a blade at James Gordon at the Falcone Mansion.
  • Hand-to-hand combat: Lazlo is a skilled combatant, even able to take on ex-soldier James Gordon.
  • Leadership: He was able to sign up two men as servants to assist him in his plan to feed human pies to the rich.
  • Toxicologist: Lazlo has some knowledge of poisons as shown when he killed six homeless people by poisoning the food he gave to them.
  • Impersonation/Acting: Lazlo is a very talented actor, even able to fool Jim Gordon with one of his disguises.
  • Singing: Lazlo is talented at singing as shown when he fed human pies to Gotham's wealthy elite.
  • Skilled Cook: Lazlo is good at cooking and was capable of making pies out of human flesh.
  • Expert Marksman/Rifles; Lazlo was able to use a rifle and shoot Sofia without hitting any of her vital organs.
  • Voice Alteration: Lazlo was able to change his voice to make himself sound like someone else. However, this skill requires mental focus as he could revert to using his regular voice if his emotions get to him.




  • In the DC comics, Lazlo Valentin, alias Professor Pyg, is an insane scientist who experimented on humans to turn them into genderless mind-controlled beings known as Dollotrons. In regard to the Dollotrons appearing on the show, Michael Cerveris stated that "You do have characters in Gotham where the way we know them in the comic book is much later in their lives. It's possible that the Dollotrons are a later part of his life. You know, that doesn't mean that they just decided to get rid of it."[4]
    • Testaments to his insanity are him cooking pies out of human flesh, and in the video game Batman: Arkham Knight, he is said to be unhinged even by Gotham's standards.
  • Before his apparent death on the show, Lazlo Valentin's M.O. was said that he impersonated serial killers, going as far as to change his voice and reconstruct his face for his personas. Whether or not Valentin was impersonating a real serial killer known as Professor Pyg, or if he invented the role himself is unclear.


  1. Lilien, Steven & Wynbrandt, Bryan (writer) & Milito, Louis Shaw (director) (November 23, 2017) "A Dark Knight: Things That Go Boom". Gotham. Season 4. Episode 10. FOX.
  2. Cannon, Danny (writer) & Stephens, John (director) (December 7, 2017) "A Dark Knight: Queen Takes Knight". Gotham. Season 4. Episode 11. FOX.