Published March 17, 2023

The Irish Heroes & Villains of the Marvel Universe

To celebrate St. Patrick's Day, meet a few heroes who were born in Ireland or have Irish heritage, including Banshee, Captain America, and Daredevil!

Over the decades, Ireland has produced a fair share of the heroes and villains who inhabit the Marvel Universe. With Saint Patrick’s Day upon us, today's your lucky day! We’re celebrating eight characters who were either born in Ireland or have Irish heritage. See if you know them all!

Matt Murdock, AKA Daredevil

Created by Stan Lee and Bill Everett, Matt Murdock debuted in DAREDEVIL (1964) #1 and has since become one of Marvel’s most iconic characters. The blind vigilante is of Irish-American descent, a fact that comes up fairly often in his stories, especially due to his relationship with Catholicism. Many of Daredevil’s best stories showcase his struggle with his religious identity as it relates to his morally ambiguous actions.

Sean Cassidy, AKA Banshee

Created by Roy Thomas and Werner Roth, Banshee debuted in X-MEN (1963) #28 as a mutant with the power to create sonic blasts. The character hails from County Mayo, Ireland, specifically a family estate called Cassidy Keep. 

In his early history, Cassidy worked for Interpol. Following the death of his wife in an attack by the Irish Republican Army, though, he ended up on the wrong side of the law, which led to a showdown with the X-Men.

Banshee didn’t remain a villain for long. Instead, he joined the X-Men and has remained a prominent mutant hero ever since. Then, during the Krakoan Era, he was possessed by the Spirit of Variance and became Vox Ignis, a Ghost Rider-like being.

Theresa Cassidy, AKA Siryn

Created by Chris Claremont and Steve Leialoha, Theresa Cassidy debuted in SPIDER-WOMAN (1987) #37 as the daughter of Sean Cassidy—although she wasn’t aware of that fact at first. Like her father, Theresa started out as a villain who can create powerful sonic blasts with her voice. 

Luckily, Theresa learned the truth about her parentage after a confrontation with the Marvel Universe’s heroes. Following that revelation, she reunited with Sean and has remained a key mutant hero ever since, working alongside such groups as X-Factor.

Tom Cassidy, AKA Black Tom

Another member of the Cassidy family, Tom Cassidy debuted in Claremont and Dave Cockrum’s X-MEN (1963) #99 with the ability to channel concussive force and heat through wood. Like so many other members of his family, Black Tom started out as a villain, working with the Brotherhood of Mutants and teaming up with Juggernaut on numerous occasions. 

Although he’s generally been depicted as a villain, Black Tom has been distinctly more heroic since Marvel’s mutants moved to Krakoa, where he has played a key role in maintaining the island nation’s security.

Miguel O’Hara, AKA Spider-Man 2099

Introduced in SPIDER-MAN 2099 (1992) #1 by Peter David and Rick Leonardi, Miguel O’Hara is of Irish and Mexican descent. O’Hara hails from Nueva York in Marvel’s distant cyberpunk-inspired future. 

After an incident involving genetic splicing, O’Hara received several different spider-like powers that resemble those of Peter Parker. Since then, he’s served as that dystopian future’s version of Spider-Man.

Cam Long

One of the Marvel Universe’s newest additions, Cam Long was created by Vita Ayala and Rod Reis, with their first appearance taking place in NEW MUTANTS (2019) #15. Cam, who is of Irish and Chinese descent, is a mutant whose physiology resembles a tiger. Since being brought back by Krakoa’s Resurrection Protocols, Cam has trained with the New Mutants and Bishop’s War College.

Molly Fitzgerald, AKA Shamrock

Debuting in MARVEL SUPER HERO CONTEST OF CHAMPIONS (1982) #1, Shamrock was created by Mark GruenwaldSteven GrantBill Mantlo, and John Romita Jr. The character—who originally hails from Dunshaughlin, Ireland—is the daughter of an Irish nationalist. Her superpower allows her to manipulate probability in her favor, allowing her to create her own brand of Irish luck. 

After working as a crime-fighter for several years, Shamrock retired. Recently, she opened an Irish pub in New York City.

Steve Rogers, AKA Captain America

One of the Marvel Universe’s oldest and most renown heroes, Steve Rogers debuted in CAPTAIN AMERICA COMICS (1940) #1 by Joe Simon and Jack Kirby. Rogers was born in New York City to poor Irish immigrant parents, making him first generation Irish-American. 

There are several series that have dealt with Rogers’ upbringing, such as CAPTAIN AMERICA (2012), which explored the tumult of his early life in-depth. Eventually, Rogers participated in Project: Rebirth and received the Super Soldier Serum. However, he’s never forgotten his humble beginnings.

Want to find out more? Explore over 30,000+ comics on Marvel Unlimited today!

You can grab these comics and more digitally or at your favorite local comic book shop. Be sure to ask your local shop about their current business policies to observe social distancing or other services they may offer, including holding or creating pull lists, curbside pick-ups, special deliveries, and other options to accommodate. Find and support your local comic book shop at or by visiting

For digital comics, all purchases in the Marvel Comics app can be read on iPhone®, iPad® and select Android™ devices! Our smart-paneling feature provides an intuitive reader experience, ideal for all types of mobile device and tablet users! Download the app on iOS and Android now!