Dejah Thoris

Dejah Thoris, Princess of Helium and daughter of Mors Kajak, is both a political heir and a representative of the scientific work sustaining life on Mars. Captured after a peaceful expedition is attacked, she speaks for cooperation between the Red and Green Martians even while imprisoned among the Tharks. Her changing relationship with John Carter—from an unanswered plea for help to mutual love and marriage—runs alongside the conflict over Helium’s independence and her right to choose her future.

Identity and Introduction

Dejah Thoris enters the story as a prisoner brought into the deserted city of Korad after the Tharks’ attack on her expedition. John Carter sees her being taken into a building, and their first encounter is a brief exchange of looks: she signals for help, but he does not understand the gesture or respond. Her hope at recognizing him gives way to disappointment and contempt as she is dragged from sight. The encounter establishes both her vulnerability in captivity and the misunderstanding that initially separates the two characters.

When questioned by Lorquas Ptomel, she identifies herself as Dejah Thoris, daughter of Mors Kajak of Helium. She explains that the expedition was a scientific research party sent by her grandfather, the Jeddak of Helium, to chart air currents and measure atmospheric density. The party was unprepared for battle because it came on a peaceful mission, a claim she says was made clear by the craft’s banners and colors.

Her account makes scientific work inseparable from political survival. Dejah Thoris argues that Helium’s research maintains the planet’s air and water supply, which she says would otherwise be insufficient to sustain human life. She presents that labor as serving the Green Martians as well as her own people, and urges them to abandon hostility and join the Red Martians in trying to regenerate a dying world. Her appeal is an explicit contrast to the Thark social order she condemns: she describes a people without homes, art, or love, whose common ownership of women and children has left them with no genuine shared bonds.

Captivity and Changing Relationship with John Carter

The first encounter in Korad leaves Dejah Thoris believing that John Carter has ignored her appeal. Their relationship changes after Carter intervenes when she is in danger. He carries her to a bench, uses a piece of silk torn from his cape to tend to her injury, and offers no explanation that she can readily reconcile with his earlier silence. She asks why he risked himself for her after refusing even friendly recognition when she first faced peril. Her bewilderment turns their earlier misunderstanding into a question of trust.

Carter later identifies the moment he first saw her in Korad as the beginning of his love for her. On a night walk, he places his silks over her shoulders against the cold; she does not move away when his arm remains around her. He understands her stillness as a sign that she accepts the closeness, and recognizes that his love dates to their first meeting. The contrast between the failed signal in the plaza and the quiet gesture on their walk marks a progression from misread need to acknowledged intimacy.

While Dejah Thoris remains a captive among the Green Martians, Carter tells her that he belongs to her in service and will fight and die for her. He asks her not to judge his declaration until she is safe among her own people, so that gratitude for his help will not determine her response. She accepts his service and authority for the time being, acknowledges that she has twice misjudged him, and asks his forgiveness. The exchange places limits on what either can conclude while captivity shapes their circumstances, while also making their growing mutual regard explicit.

That danger soon becomes more immediate. Sola reports that Sarkoja has spoken to Tal Hajus and that Dejah Thoris and Carter are to be thrown to wild calots in the great arena when the hordes gather for the yearly games. Carter and Dejah Thoris invite Sola to escape with them, offering her a home and protection among the people of Helium. Dejah Thoris promises the affection and sympathy that she says Sola has been denied by the customs of her own people, and warns that Sola could face terrible consequences if the Tharks discover she helped them. Her invitation makes their intended escape a proposed change of home and community for Sola, not merely a means of saving the captives.

Political Stakes and Separation

After Carter’s apparent death in the arena at Warhoon, Dejah Thoris faces a political crisis in Zodanga. Kantos Kan tells Carter that Sab Than, prince of Zodanga, has hidden her in the city and fallen in love with her. Than Kosis, the Zodangan Jeddak, has made her marriage to his son the price of peace between Zodanga and Helium. Tardos Mors refuses to accept that condition, declaring that Helium would rather see its princess dead than have her married to anyone other than the person of her own choice. His refusal is presented as a source of strength among his people, despite the danger of war.

Dejah Thoris explains to Carter that she has promised herself to Sab Than because she believed Carter dead and sought to protect her people from the consequences of a victorious Zodangan army. She insists that her heart had already been given to Carter, but distinguishes that love from the promise she has made with her body to secure peace. When Carter returns, she does not treat his survival as canceling her commitment: on Barsoom, she tells him, a promise is final, and the later ceremonies are only formalities. She therefore tells him that he can no longer call her his princess or chieftain.

This separation turns a private love into a conflict between personal choice and the political use of marriage. Dejah Thoris’s promise is not presented as evidence that she has ceased loving Carter; it is an act undertaken under the threat of military defeat and the subjugation of her people. The cost of Carter’s return is that he arrives after she has already accepted a binding obligation. Her loyalty to Helium and her earlier love for Carter remain active at once, though her commitment appears to leave no path back to him.

Reunion, Marriage, and Aftermath

The political arrangement ends, and Dejah Thoris tells Carter that she is free to hear him. He asks her to marry him, describing his astonishment at the prospect of winning her and making clear that her identity, not her rank as a princess, is what moves him. She answers that he need not fear her response because he already knows it, then places her hands on his shoulders. They embrace and kiss, and Dejah Thoris promises herself in marriage to Carter amid the war and destruction surrounding them.

The marriage joins their personal resolution to the larger settlement between Helium and the Tharks. After the Thark hordes and their allies have been entertained for ten days, they set out for home with costly gifts and an escort of ten thousand Heliumite soldiers commanded by Mors Kajak. A lesser jed of Helium accompanies them to Thark to strengthen the new bonds of peace and friendship. Three weeks later, Mors Kajak and his officers return with Tars Tarkas and Sola aboard a battleship sent to bring them to the ceremony that makes Dejah Thoris and John Carter husband and wife.

In the years that follow, Carter serves in Helium’s councils and armies as a prince of the house of Tardos Mors. He describes the people’s continuing devotion to Dejah Thoris, and the couple’s shared anticipation centers on a snow-white egg in a golden incubator on their palace roof. Ten of the Jeddak’s guards watch over it constantly for nearly five years; whenever Carter is in the city, he and Dejah Thoris stand hand in hand before it and plan for the future. The closing image extends their union beyond the marriage ceremony: their private hopes are attached to the long-awaited emergence of a child, while the guards and incubator place that hope within the public and technological life of Helium.