The Marley Arc of Attack on Titan, spanning chapters 91 through 105 of Hajime Isayama’s manga and the first part of the anime’s fourth season, marks a radical reorientation of the story. Where the first three seasons confined viewers largely within the walls of Paradis Island, the Marley Arc thrusts the audience toward the continent, into the heart of an empire built on centuries of oppression and fear. By shifting the point of view, Isayama forces readers to confront uncomfortable truths about history, indoctrination, and the blurred line between heroism and villainy. This comprehensive examination of the arc’s timeline, core themes, and character evolutions illustrates how it reshapes the entire series and sets the stage for the cataclysmic finale.

The Marley Arc: A Radical Shift in Narrative Perspective

Before the arc begins, Attack on Titan follows a familiar structure: a small island nation under siege by monstrous Titans, with the protagonists fighting for survival and liberation. The basement reveal in Shiganshina flips this on its head. Humanity is not extinct outside the walls; in fact, the rest of the world, led by the militaristic nation of Marley, views the Eldians on Paradis as devils. The Marley Arc opens not on Paradis but in the trenches of a four-year war between Marley and the Mid-East Allied Forces. This abrupt change signals that the story is no longer a simple black-and-white struggle. It becomes a sprawling geopolitical tragedy where every side believes its cause is just.

The arc’s opening panels introduce young warrior candidates Gabi Braun, Falco Grice, Udo, and Zofia, immediately humanizing the children bred for battle. We see daily life in Liberio, the internment zone for Eldians within Marley, where propaganda has warped the truth of history into a weapon. The shift is so jarring that it recontextualizes everything from the previous seasons. The Titans no longer appear as mindless horrors but as weapons systems piloted by indoctrinated soldiers, each with their own trauma and motivation. This fresh viewpoint is the arc’s greatest strength; it dismantles the audience’s long-held allegiances and prepares the ground for the series’ boldest question: if everyone is a victim of history, can anyone truly be a villain?

Key Characters Who Define the Marley Arc

The Marley Arc populates its world with a complex ensemble, many of whom were previously seen only as enemies. Their inner lives are laid bare, and they become as sympathetic as they are flawed. Understanding these characters is central to deciphering how the arc reshapes the series.

  • Eren Yeager: Once the fiery protagonist driven by revenge, Eren emerges in the Marley arc as a somber, calculating figure. His undercover identity as “Kruger” and his interactions with Falco show a man burdened by the future he has already glimpsed through the Attack Titan’s power. The boy who vowed to kill every last Titan now prepares to commit mass murder against civilians, including children, forcing the audience to wrestle with his transformation.
  • Reiner Braun: The Armored Titan’s psyche splits between his role as a Marleyan warrior and the brotherly affection he felt for his Paradis comrades. The arc delves into his suicidal depression and his desperate push to remain a “hero” for the next generation, primarily Gabi and Falco. His confession to Eren in the basement of Liberio becomes one of the series’ most devastating moments, revealing that the enemy always considered himself a victim.
  • Gabi Braun: A zealous warrior candidate and cousin to Reiner, Gabi embodies the cycle of hatred. Her relentless determination to prove the “devils” on Paradis are irredeemable is both infuriating and, as we learn, tragic. Her arc mirrors Eren’s early seasons: a child soldier shaped by trauma and propaganda, desperate to reclaim a stolen freedom.
  • Falco Grice: Falco is the moral compass of the warrior candidates, driven by a selfless desire to protect Gabi from the curse of the Titans. His accidental ingestion of Zeke’s spinal fluid and his subsequent transformation into the Jaw Titan tie his fate directly to the broader conflict, making him both a pawn and a symbol of hope.
  • Zeke Yeager: Already glimpsed as the Beast Titan, Zeke’s full complexity unfolds here. His secret cooperation with the Paradis volunteers and his euthanasia plan reveal a man who views his own existence as a mistake, seeking a painless end to the Eldian race. His ideological clash with Eren becomes the philosophical engine driving the subsequent arcs.

A Detailed Timeline of the Marley Arc Events

To grasp how the arc reshapes the series, it helps to walk through the major events in the order they occur within the story’s internal chronology. The timeline spans roughly the year 854, with repercussions that ripple all the way to the final Rumbling.

Year 854: The War with the Mid-East Allied Forces

The arc begins in the final months of the four-year Marley-Mid-East war. Marley’s reliance on Titan power is proving insufficient against advancing anti-Titan artillery. The battle of Fort Slava demonstrates that the age of Titan dominance is ending. Reiner’s Armored Titan is almost obliterated by naval cannons, and Zeke’s Beast Titan volley becomes a desperate measure. This opening serves a dual purpose: it shows Marley’s vulnerability and the world’s technological march, which fuels Magath and the Tybur family’s decision to refocus on the Founding Titan as a permanent deterrent. The war ends with a Marleyan victory, but the cost forces the military to accelerate the Paradis Island operation.

Immediately after, we return to Liberio, where the warrior candidates prepare for the next stage of their training. The festival celebrating the war’s end is announced, and Willy Tybur, the head of the shadowy Tybur family, begins orchestrating a grand public declaration against Paradis. This buildup, shown through the eyes of Falco and Gabi, humanizes the enemy while raising the tension. The audience knows that Eren and his allies are already inside the internment zone, preparing to strike.

Year 855: Infiltration and the Liberio Raid

Eren, disguised as a wounded veteran, slowly befriends Falco, using the boy’s innocence to relay letters to the Survey Corps operatives hidden outside. This quiet, suspenseful phase showcases the meticulous planning behind what is to come. The Survey Corps, equipped with the revolutionary anti-personnel vertical maneuvering gear, positions itself for a coordinated assault. Meanwhile, the international ambassadors and dignitaries gather for Willy Tybur’s play, a theatrical retelling of the Great Titan War that frames Marley as the true hero and Paradis as the evil remnant of an Eldian empire. Willy’s speech, broadcast across the world, declares war on Paradis, uniting the globe against a common enemy. And then Eren, in the audience, transforms into the Attack Titan, bursting through the stage and crushing Willy beneath his fist.

The Liberio raid is the arc’s brutal centerpiece. Eren’s rampage kills civilians and soldiers alike, mirroring the horror of the Colossal Titan’s attack on Shiganshina years earlier. The Survey Corps engages the War Hammer Titan, wielded by Willy’s sister Lara Tybur, in a visceral battle that reveals the Tyburs’ secret power. Captain Levi’s squad eliminates Marleyan officers, and Zeke, pretending to be captured, fakes his own death to escape with the Paradis forces. The battle culminates in Eren consuming the War Hammer Titan, acquiring its power to create crystallized weapons and structures. The sky is then torn asunder by a massive explosion: Armin, as the Colossal Titan, obliterates the Marleyan naval fleet, a horrifying echo of the first episode’s trauma. The Survey Corps retreats aboard the airship, but not before Gabi and Falco sneak aboard, driven by Gabi’s vengeful rage. Gabi shoots Sasha Blouse, mortally wounding her. Sasha’s death fractures the Survey Corps’ moral unity and signals that the cycle of violence will not end cleanly.

Year 855 (Post-Raid): The Fracturing of Alliances

Back on Paradis, the mood is somber. Sasha’s funeral becomes a pressure cooker for the clashing ideologies within the military. Eren is imprisoned for acting without authorization, and a rift grows between him and his former comrades. The volunteers under Yelena and Onyankopon reveal Zeke’s secret plan: a partial Rumbling using the Wall Titans as a deterrent, combined with the forced sterilization of all Eldians to prevent future generations from being born into a world of hatred. This “euthanasia plan” horrifies most of the Paradis leadership, but factions emerge willing to consider it. Eren’s disillusionment deepens; he rejects both Zeke’s plan and the military’s indecision, secretly contacting the anti-Marleyan volunteers under a new philosophy: freedom for Paradis, no matter the cost to the rest of the world.

The timeline of this period is murkier but crucial. Flashbacks reveal that Eren orchestrated the Liberio raid not merely as a preemptive strike but to force his friends’ hand. He understood that Zeke’s royal blood, when combined with the Founding Titan, could activate the Rumbling, but only if Eren could control it. His actions in Marley were designed to accelerate the global alliance against Paradis, eliminating the chance of diplomacy. This manipulative, almost fatalistic Eren is a new creation, one who has seen his own future and chooses to walk the path of genocide anyway. The arc thus ends not with resolution but with an unbearable tension: the scouts who once fought side by side are now poised to fight each other.

Thematic Elements That Reshape the Series

The Marley Arc introduces and deepens several themes that elevate Attack on Titan from a survival horror into a morally complex epic. These themes challenge the viewer’s preconceptions and make the final arcs resonate with tragic inevitability.

  • Morality and Perspective: By showing the same conflict from the Marleyan side, Isayama demolishes the illusion of a clear right and wrong. The warrior candidates see themselves as heroes rescuing the world from the “Island Devils,” a direct inversion of the Survey Corps’ own narrative. The arc forces the uncomfortable realization that evil is a matter of which side you are born on, and that nearly every character is a victim of history’s propaganda.
  • The Cycle of Hatred: The most pervasive theme is the endless loop of vengeance. The Marleyans oppress Eldians out of historical fear; the Eldians on Paradis retaliate to reclaim their freedom; the world retaliates with a combined fleet. Gabi’s shooting of Sasha and the subsequent grief of the Braus family illustrate that revenge begets only more loss. Mr. Braus’s speech, “Kids in the forest,” encapsulates the arc’s lesson: to keep the children out of the cycle, adults must bear the burden of hatred before it consumes the next generation.
  • Indoctrination and Radicalization: The arc is a masterclass in how systematic propaganda shapes identity. Gabi and the other candidates have been taught from birth that Paradis Eldians are devils who forced their ancestors to flee to the internment zone. This belief is so deeply ingrained that even witnessing the humanity of Paradis soldiers is initially not enough to shake it. Gabi’s gradual, painful realization mirrors the audience’s own journey of re-evaluation, making her eventual breakdown a powerful indictment of nationalist brainwashing.
  • Freedom vs. Control: Eren’s journey from seeking freedom to imposing absolute control over the world’s fate reaches its philosophical peak here. The arc poses a terrifying question: if true freedom can only be achieved by denying all others their freedom, is that freedom or tyranny? Zeke’s sterilization plan represents a different form of control, a merciful end to suffering through non-existence. Both brothers seek to end the cycle, but their methods reveal how the desire for freedom can itself become a prison.
  • Identity and Self-Worth: Reiner’s split personality is the most explicit exploration of fractured identity, but Falco, Gabi, and even Zeke grapple with what their existence means. Reiner’s desire to be a hero to someone, anyone, stems from the primal wound of being born to a mother who only wanted him to become a warrior. Zeke’s nihilism arises from being used as a tool by both his parents and Marley. The arc argues that without a sense of authentic self, people become weapons for causes they may not even believe in.

How the Marley Arc Transforms Character Arcs

The events in Marley do not simply add new characters; they fundamentally retroactively alter the meaning of earlier character journeys and set each remaining figure on a collision course with their own ideals.

Eren Yeager’s descent into anti-heroism is the spine of the arc. In the previous seasons, Eren was often reactive, his rage directed at clear enemies. In Marley, he becomes an agent of premeditated terror, yet his internal anguish is palpable. His conversation with Reiner in the cellar, where he quietly tells Reiner, “I think we are the same,” reveals a chilling empathy with his former enemy. Eren no longer sees a difference between killing for survival and killing for ideology. By the time he starts the Rumbling, the Marley Arc has laid the groundwork so thoroughly that the horror feels inevitable, not shocking.

Reiner Braun reaches his narrative climax in this arc. The weight of his double identity crushes him, and his suicidal thoughts are laid bare. When he begs Eren to kill him and end his suffering, he is essentially asking for the salvation his survivor’s guilt denies him. The arc saves Reiner not through redemption but through responsibility: he must protect Gabi and Falco, even if it means confronting Eren again. His character becomes a mirror for the entire story’s tragedy: a man who wanted to be a hero but became a monster to people he loved.

Gabi Braun and Falco Grice exist as a deliberate parallel to Eren and Mikasa at the start of the series. Gabi’s fanaticism, her skill, and her gradual awakening replicate Eren’s path in reverse—she learns that her “devils” are human. Falco, like Mikasa, is protective and emotionally anchored, but his innate empathy allows him to see through propaganda sooner. Their arcs show that the cycle can be broken, but only through personal sacrifice and the painful recognition of the other’s humanity. The controversial Gabi character arc remains one of the most discussed elements in the fandom for this reason.

Zeke Yeager steps out from being a mysterious antagonist to a tragic ideologue. His “euthanasia plan” is revealed not as malice but as a twisted form of mercy, rooted in his own childhood torment. His bond with Eren, built on their shared father, becomes the axis of the entire final showdown. The Marley Arc gives Zeke the depth needed to become the series’ second philosophical pole, his anti-natalism clashing violently with Eren’s radical existentialism.

The Marley Arc’s Role in Setting Up the Finale

Without the Marley Arc, the Rumbling and the battle of Heaven and Earth would feel unearned and hollow. By spending extended time with the so-called enemy, Isayama creates a world where the audience struggles to choose a side. The Liberio raid, when viewed from Marley’s perspective, is a terrorist attack on civilians, a 9/11-scale tragedy that unites the world against Paradis. This global alliance is precisely what Eren needs to justify the Rumbling. The arc transforms the series into a geopolitical thriller where diplomacy is dead, and every nation’s hands are bloodied. The Paradis Island Operation morphs from a straightforward military mission into the final nail in the coffin of peaceful coexistence.

The arc also introduces the broader history of the Eldian Empire and the Great Titan War, a lore expansion that recontextualizes the entire mythos. The truth that Karl Fritz’s will suppressed power for “peace” at the cost of leaving his people vulnerable to Marleyan aggression turns the Founding Titan into a curse of passivity. This explains why Eren must act, even if his action is monstrous. It also explains why Ymir, the original Founding Titan, remains a slave in the Paths, waiting for someone to see her not as a tool but as a person. The Marley Arc seeds all these revelations, making the final arc’s mind-bending lore feel like a natural culmination rather than a last-minute addition.

References to real-world historical parallels, such as the internment zones echoing Nazi ghettos and the narrative of nationalist indoctrination, ground the arc in recognizable horror. This is not accidental; Isayama has consistently drawn from history to make his fantasy feel uncomfortably plausible. The arc’s commentary on the dehumanization required to wage war invites comparisons to historical ghettoization and the propaganda used to justify atrocities. These parallels deepen the series’ impact, moving it beyond entertainment into a grim meditation on human nature.

The Lasting Legacy of the Marley Arc

The Marley Arc does more than introduce new villains; it systematically dismantles the story’s original moral foundation. By the time the final rumbling begins, the audience has witnessed the full spectrum of suffering on both sides. There are no heroes left unscathed, and no villains without a reason. This arc demands that we sit with the discomfort of understanding the enemy, and it forces us to ask whether freedom for one group can ever justify the annihilation of another. In reshaping the timeline of the series, it ensures that every explosion, every death, and every tear sheds carries the weight of an entire history, not just a single side’s grievance.

For those who wish to explore the arc’s intricate details further, the manga’s volumes 23 through 26 and episodes 60 through 75 of the anime provide the primary source material. The passionate discourse among critics and fans, as documented on platforms like Wikipedia’s Attack on Titan entry and dedicated wikis, attests to its narrative power. In the end, the Marley Arc is not merely a shift in location; it is the crucible in which the series’ final, devastating truths are forged.