The Superman S Symbol in Only a Monster: Meaning and Analysis

What the Superman S Is

The Superman S is a hand-painted emblem on a blue T-shirt that Joan's father makes for her when she is six years old. In the prologue, Joan announces she is going to be Superman when she grows up and asks for a costume so she can practice. Her father, who dislikes spending money, paints an S on her blue T-shirt and finds a red napkin she can use as a cape. Joan wears the outfit to bed every night. The shirt is a homemade approximation of a superhero costume—modest, improvised, and made with love—but it carries the full weight of Joan's childhood aspiration.

The S itself is never described in detail beyond being painted on the shirt. Its power as a symbol comes not from its appearance but from what it represents: a child's belief that she can grow up to be a hero. That belief is immediately challenged. When Joan comes to stay with her grandmother in London that same summer, Gran tells her plainly: You're not a hero, Joan. You're a monster.

The S as a Hero Ideal

For six-year-old Joan, Superman represents the clearest possible definition of a hero. She has absorbed the cartoon version of monsters—giant spiders, robots, creatures that lurk under beds and eat people—and she knows Superman is the opposite of that. Superman saves people. Superman is good. When Joan tells Gran she wants to be Superman, she is declaring her moral identity before she fully understands what that declaration means.

The S on her shirt is therefore a promise Joan makes to herself. It is also a promise her father helps her keep, however modestly. The painted S and the red napkin cape are the tools of her imagined future. She wears them to bed, practicing heroism even in sleep.

Gran's response dismantles that promise. She does not mock Joan's costume or her ambition. Instead, she redefines the terms. Monsters, Gran explains, do not look like cartoon creatures. Real monsters look like me and you. The S on Joan's shirt does not change, but its meaning is immediately destabilized. If Joan is a monster, then the S is not a badge of heroism but a costume of denial.

The S and the Monster Identity

The prologue establishes a tension that runs through the entire novel: Joan wants to be a hero, but she is born into a family of monsters. The Hunts steal life from humans. Gran demonstrates this by producing a gold coin from the air and teaching Joan to make it vanish the monster way. Joan succeeds, and Gran explains the family rule: the Hunts hide in plain sight, and Joan must never tell anyone about monsters.

The S on the shirt becomes a symbol of the gap between who Joan wants to be and what she is. She is not a hero. She is a monster who steals time from humans. The childhood costume, made with such care by her father, now reads as a kind of tragic irony: the girl who wanted to be Superman is instead a creature that a hero would be born to destroy.

This tension becomes explicit in the chapter titled Fourteen, when Joan, hiding from Nick, thinks about screaming a warning to the crowded market: The hero is here in this time! She stops herself because she would sound mad—like screaming that Superman was here. The comparison is telling. Nick, the human hero, is the closest thing the novel has to a Superman figure. He is believed to be born to kill monsters. And Joan is a monster. The childhood dream of being Superman has been inverted: the hero she once wanted to become is now the greatest threat to her family and to her own life.

The S and Nick

Nick's role in the novel complicates the Superman parallel further. In the chapter titled Twenty, Joan witnesses the truth of Nick's origin: he was not born to kill monsters. He was made into a hero. A woman and a man torture him, killing his family over and over, rebooting him each time, until his virtue curdles into righteous fury. The hero is constructed, not destined.

This revelation changes what the Superman S means. Superman, in the classic myth, is born with power and chooses to use it for good. Nick's heroism is not chosen; it is inflicted. The S on Joan's childhood shirt represented a voluntary aspiration—a child choosing to be good. Nick's heroism represents the opposite: a person broken until he becomes a weapon. The symbol of the hero, in other words, is not a guarantee of moral goodness. It is a role that can be manufactured.

Joan's connection to Nick deepens the irony. She loved him. She trusted his moral compass. In the chapter titled Nineteen, she remembers how being near Nick made her feel like the person she'd wanted to be—the person who wore the Superman shirt. But Nick would kill her if he knew what she was. The hero she admired is the enemy of the family she loves.

The S and Moral Compromise

By the chapter titled Nineteen, Joan is deep in the moral compromises of monster life. She has stolen time. She has lied. She has watched her family die and has tried to change the timeline to save them. Walking through a tunnel under the Thames, she is struck by a yearning for Nick—not for the hero who hunts monsters, but for the boy she knew before all this. She remembers how he rescued a wasp that was trapped in a room, releasing it outside. It's just in the wrong place, he had said.

That memory triggers the Superman recollection. Joan remembers telling Gran, years ago, that she wanted to be Superman. Gran's answer—You're a monster—comes back to her. The S on the shirt is now a symbol of lost innocence. Joan is not the person she wanted to be. She is morally compromised, and she knows it.

The S does not appear again in the novel as a physical object. Its power is entirely retrospective. It exists in memory, as a marker of the child Joan was before she understood what her family was, and as a measure of how far she has traveled from that child.

What the S Means in the End

The Superman S is a symbol of aspiration that becomes a symbol of impossibility. It represents the hero Joan wanted to be, the hero she cannot be because she is a monster, and the hero she discovers is not what she thought. Nick, the actual hero of the story's myth, is a constructed weapon, not a chosen savior. The S, in the end, is not a promise of goodness. It is a question about what heroism even means in a world where monsters and heroes are both made, not born.

The symbol connects directly to the novel's theme of the construction of heroism: if Nick's heroism is manufactured through torture, then the Superman ideal Joan wore on her shirt is itself a kind of fiction. It also connects to the moral cost of time travel, since Joan's attempts to change the timeline require her to abandon the moral clarity the S once represented. And it connects to family loyalty vs personal conscience: Joan must choose between the hero she wanted to be and the family she was born into. The S also touches on memory, truth, and erased timelines, since the symbol survives only in Joan's memory, and on free will and the self-correcting timeline, since Nick's manufactured heroism raises the question of whether anyone in this story truly chooses what they become.

Study Questions

1. Why does Joan's father make the Superman costume for her, and what does this reveal about their relationship?

Joan's father paints an S on a blue T-shirt and finds a red napkin for a cape because he dislikes spending money. The costume is homemade and improvised, but it is also a loving response to his daughter's request. He does not dismiss her ambition or tell her she cannot be a hero. He makes her a costume so she can practice. This reveals a father who supports his daughter's imagination even within the limits of his resources. The contrast with Gran's immediate rejection—You're not a hero, Joan. You're a monster—highlights the different moral worlds Joan inhabits: her father's human world, where heroes are possible, and her grandmother's monster world, where they are not.

2. How does Gran's revelation that Joan is a monster change the meaning of the S on her shirt?

Before Gran's revelation, the S represents Joan's chosen identity: she wants to be Superman, a hero who saves people. After Gran explains that real monsters look like people and that Joan is one of them, the S becomes a symbol of denial. Joan is wearing a hero's emblem while being a creature that heroes are supposed to destroy. The shirt does not change, but its meaning is inverted. It now marks the gap between who Joan wants to be and what she is.

3. In the chapter titled Fourteen, Joan thinks about screaming Superman was here about Nick. What does this comparison reveal about Nick's role in the story?

Joan's comparison of Nick to Superman reveals that Nick occupies the hero role Joan once aspired to. He is the human hero believed to be born to kill monsters. But the comparison is also ironic, because Joan later learns that Nick was not born to be a hero—he was made into one through repeated torture. The Superman myth implies a natural, chosen goodness. Nick's heroism is manufactured. The comparison therefore exposes the novel's theme of the construction of heroism: the hero is not a fixed category but a role that can be imposed on a person.

4. Why does Joan remember the Superman shirt in the chapter titled Nineteen, and what does this memory reveal about her moral state?

Joan remembers telling Gran she wanted to be Superman while walking through a tunnel under the Thames, after she has stolen time, lied, and watched her family die. The memory surfaces immediately after she thinks about Nick rescuing a wasp and releasing it outside—an act of casual kindness that represents the moral clarity Joan has lost. The Superman memory reveals that Joan is aware of her own moral compromise. She is not the person she wanted to be. The S on the shirt, remembered now, is a measure of how far she has fallen from her childhood ideal.