10 The Punisher Secrets Every Fan Should Know

How Marvel Created the Phenomenon Known as Punisher

The Punisher was an immediate hit among Marvel Cinematic Universe fans. After years of waiting for a truly street-level, gritty hero willing to cross into the darker side of justice, viewers finally got what they wanted. Frank Castle’s brutal, heartbreaking story of loss and revenge drew in a massive audience, solidifying the show’s place as one of Marvel’s most grounded and intense projects. Here are some of the best behind-the-scenes facts from the series.

Jon Bernthal Was the Only Choice For The Punisher

After his explosive debut in Daredevil Season 2, Jon Bernthal's Punisher was so popular that Netflix greenlit the spin-off almost immediately. When it came time to cast the standalone series, the producers didn't even hold auditions. Showrunner Steve Lightfoot stated that Bernthal was Frank Castle, and they never looked at another actor.

Karen Page Wasn't Supposed to Be in the Show

Deborah Ann Woll's Karen Page was not part of the original plan for The Punisher spin-off. However, her on-screen chemistry with Jon Bernthal in Daredevil Season 2 was so electric and unexpected that the creators rewrote the show to include her. She became Frank's most important human connection and the "light" to his "dark."

Bernthal’s "Method" Was Intense Isolation

To stay in the dark, isolated headspace of Frank Castle, Jon Bernthal intentionally cut himself off from the world. He would put on headphones and listen to heavy, dark music, and he purposefully avoided his wife and children for long stretches during filming to maintain Frank's sense of loss and loneliness.

The Show Used Real Military Consultants

To ensure the show's military-heavy flashbacks and Frank's tactics were authentic, the production hired real-life U.S. Marine veterans as consultants. One of the main consultants, J.W. Cortes (who plays Detective Alvarez in the show), is a former Marine and active-duty MTA police officer, who provided invaluable insight into the tactical mindset.

The Punisher's Violence Was Intentionally "Sloppy"

Bernthal and the stunt coordinators made a deliberate choice to ensure Frank's fighting style was not the clean, martial-arts-based style of Daredevil. They wanted it to be a "brawl." The fights are ugly, desperate, and full of brutal, close-quarters grappling, reflecting Frank's military training and his "win-at-all-costs" mentality.

Preparation Included Walking for Hours

To get into character, Bernthal would often show up to set hours early. He would put on Frank's combat boots, put weight in his backpack, and just walk the streets of New York (and across the Brooklyn Bridge) alone, in the dark, to feel the character's relentless, grinding drive.

Ben Barnes (Billy Russo) Didn't Know His Character's Fate

When Ben Barnes was cast as Billy Russo, he was a huge fan of the comics and immediately knew who "Jigsaw" was. However, the show's creators initially misled him, telling him their version was a "fresh take" and that Russo was just a straightforward ally to Frank. Barnes played the first half of the season as a genuinely good friend, which made his eventual betrayal and transformation far more effective.

The Season 1 Finale Was Changed After a Real-World Tragedy

The original climax for Season 1 was set to involve a public-facing act of violence that was deemed too sensitive after the tragic 2017 mass shooting in Las Vegas. Out of respect, the production paused, and the writers re-tooled the finale to be a more personal, contained confrontation, which became the brutal carousel showdown between Frank and Billy Russo.

The "Dogs of Hell" Biker Gang Crossover

The Punisher has a direct, gritty connection to Agents of S.H.I.E.L.D. The "Dogs of Hell" biker gang, who serve as antagonists in The Punisher, is the exact same biker gang that first appeared in a Season 1 episode of Agents of S.H.I.E.L.D. ("Yes Men").

Season 3 Was Already Planned

The show's abrupt cancellation by Netflix in 2019 was not a creative decision. The series was a massive hit, and the writers' room was already in the process of mapping out the entire story for Season 3. The cancellation was part of Netflix's larger, corporate-level decision to end its partnership with Marvel Television, leaving Frank Castle's story (for now) unfinished.