Quicksilver is a character appearing in American comic books published by Marvel Comics. Created by artist Jack Kirby and writer Stan Lee, the character first appeared in The X-Men #4 (cover dated March 1964). Introduced as an antagonist in Magneto's Brotherhood of Evil Mutants alongside his twin sister, Scarlet Witch, Quicksilver later reformed and joined the Avengers beginning with The Avengers #16 (May 1965), becoming part of the team's second generation.
Quicksilver is the superhero persona of Pietro Maximoff, a Romani speedster capable of moving and thinking at extreme speeds. Long portrayed as the mutant son of Magneto, he was formerly married to Crystal of the Inhuman Royal Family, with whom he has a daughter, Luna. A 2015 retcon established that he and his sister were not Magneto's children or mutants, but ordinary children artificially empowered by the High Evolutionary. Pietro and Wanda have been listed as among the most visible Romani characters in mainstream superhero comics.
Major Quicksilver stories include writer Peter David's run on X-Factor vol. 1 (1991–1993), which interpreted Pietro's irritability as a psychological consequence of living at superspeed, and the eponymous ongoing series (1997–1998), which placed him as the reluctant leader of the Knights of Wundagore. He instigated the "House of M" event (2005), and the subsequent Son of M miniseries (2006) followed his attempt to reclaim his abilities through exposure to Terrigen Mist. Writer Saladin Ahmed's Quicksilver: No Surrender (2018) reframed the character's abrasiveness as anxiety rather than arrogance.
The character has appeared in a range of movie, television, and video game adaptations. Two separate live-action versions of Quicksilver were adapted by two different film studios, as a result of a rights dispute between Marvel and 20th Century Fox: Aaron Taylor-Johnson portrayed the character in the Marvel Cinematic Universe (MCU) films Captain America: The Winter Soldier (2014) and Avengers: Age of Ultron (2015), while Evan Peters portrayed the character in the X-Men film series by 20th Century Fox.
Publication history Early years and 1970s Quicksilver first appeared in The X-Men #4 (March 1964) and was created by writer Stan Lee and artist/co-writer Jack Kirby. In that issue, the character voices a theme central to the broader social undertones of the series, declaring of humanity: "Why should we love homo sapiens?? They hate us—fear us because of our superior power!". Scholars have noted that while such thematic seeds were present in the early Lee–Kirby run, they would not fully take root in the X-Men franchise until the mid-1970s, when a more diverse international cast brought questions of prejudice and belonging to the foreground. Both Kirby and Lee had stepped away from The X-Men by issue #20, but scholar Joseph Darowski argues that their work established Quicksilver as one of the few characters in the early run who directly engaged with the social tensions that scholars have since identified as central to the franchise's later development.
The character initially appears as an antagonist to the X-Men as a member of Magneto's Brotherhood of Evil Mutants, though he and his twin sister Scarlet Witch are depicted from the outset as reluctant participants rather than committed villains. Within this early antagonist role, Pietro's traits of a volatile temper, a protectiveness toward his sister, and a friction with authority were established in these early issues and recurred across decades of stories.
Quicksilver and Scarlet Witch reformed and joined the Avengers beginning with The Avengers #16 in May 1965, becoming part of the team's second generation alongside Captain America and Hawkeye. Despite this prominent placement, Quicksilver was editorially marginalised within the Avengers line during the early 1970s. A 1972 internal Marvel Comics memo, later made public by comics historian Sean Howe, ranked the company's characters by importance. Quicksilver was the only superhero on the entire list to receive the lowest ranking ("not as important"); the other characters who got it were two western characters (Ringo Kid and Western Ghost Rider) and a background figure (The Watcher).
1980s and 1990s Quicksilver's marriage to Crystal of the Inhumans and the birth of their daughter Luna became significant developments in the character's history, tying him into the Fantastic Four and the Inhuman Royal Family. The wedding was constructed across two titles: in The Avengers #127, by writer Steve Englehart and artists Sal Buscema and Joe Staton, the Avengers learned of the impending ceremony only when Gorgon of the Inhumans arrived to ask why they had not been preparing for it.Greenberger, Robert (2020). "Flashback: Weddings in the Bronze Age". ''Back Issue!''. TwoMorrows Publishing. Issue #123. pp. 2–21. The ceremony itself was depicted in Fantastic Four #150 by writer Gerry Conway and penciler Rich Buckler, where a threat engineered by the Inhuman Maximus the Mad working alongside Omega (revealed to be Ultron-7) was resolved when Franklin Richards awoke from a long coma and defeated the conspirators, after which the wedding took place with Black Bolt walking Crystal down the aisle. The birth of their daughter Luna further embedded Pietro within the Inhuman Royal Family.
Writer Steve Englehart, who had previously worked on the character in Avengers, was by his own account never a fan of Quicksilver as a superhero and felt the character was more naturally suited to villainy. Englehart engineered a deliberate and extended heel turn across Vision and the Scarlet Witch, the two Avengers annuals, and West Coast Avengers, in which Pietro (driven to instability by Crystal's infidelity) framed the Avengers for treason and attempted to murder former allies. The reversal of this arc was handled largely by other writers: Jo Duffy's X-Factor Annual #2 established that Pietro had been psychically driven to villainy by Maximus the Mad, and a subsequent Fantastic Four Annual story confirmed he had been neurologically restored, allowing the character to return to heroic status.
From 1991 to 1993 Quicksilver was a regular character in the first volume of X-Factor. When assembling his cast, writer Peter David specifically sought access to Pietro, viewing him as a character with a justified sense of arrogance and a natural capacity to generate friction within a team dynamic. The interpretation David developed was also a deliberate departure from how superspeed had typically been written: where other writers, such as Mark Gruenwald in D.P. 7 or the creative teams on The Flash, had focused on superspeed as a physical phenomenon, David was specifically interested in its mental dimension: the consequence of a mind operating faster than the world around it. He characterized Quicksilver's chronic irritability as a natural psychological result of this accelerated perception, arguing that living in a world moving in slow motion would make one feel "very superior... and very impatient with everyone." Pietro's ambiguous commitment to the team was shown in small details: he declined to wear X-Factor's uniform (a fact noticed and remarked upon by the press in issue #72) and his standing as a genuine member was difficult to parse in the run's early issues. Throughout, David depicted Pietro wrestling with his identity as a superhuman and a hero, with his marriage deteriorating alongside his struggle to function at the pace of an ordinary life. By issue #87, a therapy session made explicit what the run had been building toward: that Pietro needed to slow down and step away from his fast-paced, action-packed lifestyle to focus on what was truly important. David also depicted him practicing deliberate slow-motion exercises as attempts to manage his condition.
Quicksilver starred in Quicksilver, a regular ongoing eponymous series that began in November 1997 and ran for 13 issues. The series was created by writer Tom Peyer, with John Ostrander later taking over scripting duties. Both writers centered the book on Quicksilver's reluctant role as leader of the Knights of Wundagore, an elite group of the High Evolutionary's genetically altered New Men, placing the characteristically impatient and headstrong Pietro in a situation requiring sustained commitment and leadership. Its focus on Quicksilver's strained marriage and his team's wavering confidence in his leadership gave it a degree of character depth noted by contemporary reviewers.
2000s-2020s Pietro served as the primary instigator of the reality-warping of the "House of M" event. By exploiting his sister's dissociative mental state and her grief over her lost children, he pressured Wanda into reshaping the world into one where mutants were the dominant species, framing the manipulation as an act of familial love and warning that refusal would cost Wanda her life. When Magneto discovered Pietro's role in orchestrating the event, he killed his son in a rage, though Pietro was resurrected when Wanda retaliated by stripping the majority of mutants of their powers, including Pietro himself. The subsequent Son of M miniseries followed Pietro's desperate attempts to reclaim his abilities through exposure to the Inhuman Terrigen Mist, a storyline that introduced new time-manipulation powers before eventually leaving him powerless again. Peter David, who later wrote the character in X-Factor: The Quick and the Dead and All-New X-Factor, described his approach to the post-"House of M" Pietro as wanting to take the character to "absolute rock bottom" before exploring what remained.
Quicksilver appeared as a supporting character in Avengers Academy from issue #1 (August 2010) through its final issue #39 (January 2013), joining the teaching staff in part to distance himself from his father's legacy and eventually making a public confession of his past actions. He subsequently appeared as one of the members of All-New X-Factor, launched in 2014 as part of the second Marvel NOW! wave, with Peter David's handling of the character earning a 2014 @ssie award from Ain't It Cool News."AICN COMICS 10th Annual @$$IE AWARDS Day Five: Best Crossover/Event! Favorite Superhero! Best Ongoing Series!" . Ain't It Cool News. March 7, 2014.
In December 2014's Avengers and X-Men: Axis #7, by Rick Remender and Adam Kubert, a spell cast by Scarlet Witch, who in the event had been inverted to villainy by a spell cast by Doctor Doom, revealed that Magneto was not the biological father of Wanda or Pietro. This was followed by Uncanny Avengers #4 (May 2015), in which Remender and artist Daniel Acuña further revealed that the twins were not mutants at all, but rather ordinary children whose powers had been artificially induced through experimentation by the High Evolutionary. The timing of the changes, coinciding with the characters' introduction to the Marvel Cinematic Universe in Avengers: Age of Ultron (2015), where they similarly lack mutant origins or any connection to Magneto, a character whose film rights were then held by 20th Century Fox, led commentators to speculate that the comics retcon was motivated by synergy with the Marvel Cinematic Universe. The revision drew sustained criticism from comics commentators, who argued that the twins' status as Magneto's mutant children was integral to their characterization and called for the retcon to be reversed.