Jonathan and Martha Kent: the adoptive parents who made Superman

The Kents' origin in the Superman mythology

Jonathan and Martha Kent do not appear in Action Comics #1 (1938), where a passing motorist leaves the baby at an orphanage: they first show up in Superman #1 (June 1939), where only Mary Kent is named. Their first names then change (Eben and Sarah in George Lowther's 1942 novel, John and Mary in Superman #53 in 1948) before Jonathan (Adventure Comics #149, 1950) and Martha (Superboy #12, 1951) take hold. Created by Jerry Siegel and Joe Shuster as an ordinary rural American farm couple, they embody the human, earthly side of the hero from elsewhere. Without them, Kal-El of Krypton would have been nothing but an alien with prodigious powers: the Kents make him Clark Kent, and through Clark, Superman.

Their farm sits in the fictional small town of Smallville, somewhere on the central plains of Kansas. That geographic anchor is not incidental: the American Midwest stands, in United States popular culture, for traditional values, hard work, honesty and a close-knit community. Smallville is named only in 1949 (Superboy #2), and it is the 1978 film, taken up by the comics after 1986, that places it in Kansas: the hero is thus rooted in a symbolically charged land.

Over the decades, versions of the Kents have shifted with the story arcs. In some they die before Clark becomes an adult; in others they are still alive when Superman works in Metropolis. That narrative flexibility lets writers explore different dimensions of their impact, as the maxi-series Birthright by Mark Waid and Leinil Francis Yu (2003-2004), in which both Kents are alive, analyzed in our complete guide to Superman Birthright shows.

The ship, the discovery, and Clark's adoption

Kal-El's arrival on Earth is one of the founding events of the whole Superman mythology, and the Kents are its first witnesses. Depending on the version, the rocket (a crystal ship in the 1978 film) sent by Jor-El and Lara Lor-Van from Krypton crashes in a Kent cornfield or in woods near their farm.

The couple, generally described as unable to have biological children, decides at once to take in the extraterrestrial baby. That decision is never treated as a rational calculation: it is presented as an immediate parental instinct, an irrational recognition that transforms their life in a second. The Kents name the child Clark -- a first name that, in some versions, comes from Martha's maiden name.

They choose to keep their son's extraterrestrial origin secret, to protect him from a world that would not know how to react to such a being. That decision will have immense consequences: it lets Clark grow up as an ordinary human, without the crushing weight of an imposed cosmic mission, and develop his humanity before his powers.

Clark Kent's moral education

The education Jonathan and Martha give Clark is the most crucial element for understanding Superman. Without their values, Kal-El could have become anything: an indifferent god, a conqueror, a dictator. Instead they make him a modest, hard-working, respectful and deeply human farmer.

That education follows several recurring principles in most versions:

• Humility: Clark learns very early to hide his powers, not to stand out, to accept the common rules
• Respect for work: he takes part in farm chores like any rural American teenager
• Universal compassion: help everyone who needs it, without distinction
• Moral discipline: never use his powers for personal gain
• Respect for human life: never kill, even in the face of absolute evil

It is this education that the stories invoke to explain why Superman does not abuse his power. To see in detail how that duality shows in his secret identity in Metropolis, our complete analysis of Clark Kent traces the inseparable link between the rural education and the adult hero's journalistic stance.

The values passed to the future Superman

Beyond the general principles, the Kents pass on to Clark a set of concrete values that structure his whole later life:

Truth: Jonathan Kent insists on the absolute importance of honesty. That value culminates when Clark chooses journalism as an adult profession -- truth becomes his job as much as his morals.

Justice: Martha Kent teaches her son that strength confers no rights, that justice is a higher principle that binds even the most powerful. That lesson underpins the philosophical opposition between Superman and every villain who believes power justifies everything.

Hope: this is probably the most distinctly Kentian value. The Kents instill in Clark a stubborn faith in humanity, in its capacity to improve, in the worth of every life. It is that faith Superman will later carry to the whole world.

Humility before the mission: Jonathan often tells Clark he received these powers for a reason, and that he will have to use them for something larger than himself. But that mission is never imposed on him in a triumphant way: it is a responsibility to carry humbly, never a title to brandish.

Jonathan Kent's death: a narrative turning point

In many versions of Superman, but not all (from John Byrne in 1986 through 2008, or in James Gunn's 2025 film, both Kents are alive when Clark becomes Superman), Jonathan Kent's death is a decisive narrative event that marks Clark's shift from rural adolescence to heroic adulthood. The circumstances vary: a heart attack in the 1978 film, in Smallville and in the 2008 comics (Action Comics #870, when Clark is already Superman), a tropical disease that also takes Martha in Superman #161 (1963), a tornado in Man of Steel (2013), a crash caused by a drunk driver in the New 52.

The importance of that death is philosophical: it teaches Clark, just as he begins to develop the reach of his powers, that he cannot save everything. Even with super-speed, super-strength and super-vision, he cannot stop his own father from having a heart attack. That lesson of powerlessness before human mortality founds the hero he will become: Superman will never be an arrogant savior, because he has known since adolescence that some things no power can change.

That scene has been adapted to devastating effect more than once on film: Glenn Ford's version in Superman: The Movie (1978), in which Jonathan dies of a heart attack shortly after watching Clark outrun a train, already shows Clark's powerlessness in the face of death. More recently, Kevin Costner's version in Man of Steel (2013) explores that death from a different, equally heartbreaking angle: Jonathan sacrifices himself willingly to protect his son's secret.

The Kents on screen: Glenn Ford to Diane Lane

On the big screen, several actors have played Jonathan and Martha Kent, each bringing their own view of the couple:

Glenn Ford and Phyllis Thaxter play the Kents in Superman: The Movie (1978). Glenn Ford, already an icon of the western and of classic American film, gives Jonathan a rustic dignity and a simple nobility that define the Reeve films.

Kevin Costner and Diane Lane take over the roles in Man of Steel (2013), which opens the DCEU, then in Batman v Superman (2016); Diane Lane also returns in Justice League (2017). Costner delivers a more tormented Jonathan, more anxious about his son's fate in a world that might not accept him. Diane Lane offers a more stoic, more deeply loving Martha, central in several key DCEU moments.

Eva Marie Saint plays Martha Kent in Superman Returns (2006); Jonathan Kent, already dead, appears there only in photographs.

For the new DCU era launched by James Gunn, Pruitt Taylor Vince plays Jonathan while Neva Howell plays Martha. That recasting reaffirms the couple's fundamental importance in Superman's cinematic mythology.

The Kents on television

Television, which has the time to explore characters in depth, has given the Kents far more screen time than film. Several series develop them in depth.

In Lois & Clark: The New Adventures of Superman (1993-1997), K Callan and Eddie Jones play Kents who are still alive, with whom adult Clark keeps a very close relationship. That ongoing parental presence is one of the series' distinctive points, as our complete analysis of Lois and Clark traces.

In Smallville (2001-2011), John Schneider and Annette O'Toole play the Kents in a version that becomes one of the most memorable in television history. The series follows teenage then young-adult Clark, and gives the Kents a central role for whole seasons. Jonathan Kent dies of a heart attack in season 5, the night he beats Lex Luthor in the Senate election. For the full cast, our analysis of the Smallville cast details every main actor in this cult series. Tom Welling plays the Clark Kent raised by that version of the Kents.

More recently, in Superman & Lois (2021-2024), Tyler Hoechlin plays an adult Clark Kent who, after Martha's death in the pilot, settles with Lois and their sons at the Kent farm in Smallville; Jonathan, who died of a heart attack during Clark's teens, appears in flashbacks. The animated series My Adventures with Superman also offers a modern, touching view of the Kents.

Cultural symbolism of the Kents

Beyond their specific narrative role, Jonathan and Martha Kent embody in American popular culture a strong symbolic figure: the ideal parents. Not perfect, not glamorous, not rich -- just ordinary, loving, present and grounded in solid values.

That dimension partly explains the lasting popularity of the Superman character. The hero is not a solitary orphan (like Batman): he has a family, a childhood, an earthly homeland. That human anchor makes him deeply likable and relatable, despite his cosmic powers.

The Kents also represent a particular vision of America: the agricultural Midwest, small towns, honest work, the tight community. That deeply nostalgic imagery works even for readers who have never set foot in Kansas. To evoke that rural aesthetic day to day, our shop offers a complete selection of Superman clothing in vintage Smallville designs, and Superman décor that pays homage to the visual world of the Kent farm and the mythical Kansas. For collectors, the Superman figurines also offer several Clark Kent versions tied directly to his Kent education.

Conclusion

Jonathan and Martha Kent are probably the most important supporting characters in the whole Superman mythology. Without them, Kal-El of Krypton would have remained an alien with prodigious powers but no moral direction. With them he becomes Clark Kent, humble Kansas farmer, honest Metropolis journalist, and finally Superman, the most lasting symbol of hope in modern popular culture.

To understand the Kents is to understand that a hero's strength does not come from his powers but from the values his parents passed on to him. It is to understand that modesty, honesty and compassion are daily moral choices, not supernatural gifts. And it is to understand, at last, why Superman remains, decade after decade, the hero who most resembles what we would want to be, rather than what we would fear becoming.

To explore in more depth the Smallville setting and the farm/Kansas dimension in the Superman mythology, our complete Smallville guide and our cast analysis of the cult television series go further.