Deuteragonist
Quick answer: The deuteragonist is a story's second most important character: ally, rival or love interest. Learn what the role does and how it differs from a sidekick.
Second billing has its own term: the deuteragonist is a story's second most important character, the person who, after the protagonist, most shapes and is most shaped by the events. In other words, if the protagonist is the story's centre of gravity, the deuteragonist is the nearest orbiting body, large enough to pull the tides. The word comes from Greek theatre, where the deuteragonistes was literally the second actor, added when drama outgrew a single performer and a chorus.
The role appears in almost all fiction longer than a vignette, whether or not the writer names it. It matters most at planning and revision: deciding who your second character is, and what they want independently of the hero, determines where your subplots live, who carries the story's counterargument, and whose relationship with the protagonist the ending must resolve.
Jim and Sam: two ways to be second
In 'Adventures of Huckleberry Finn', Jim is the deuteragonist, and the book's moral weight rests on him. Huck steers the plot, but Jim's search for freedom is the journey's real cargo, and every major turn in Huck's conscience happens against Jim's presence, patience and vulnerability. Twain builds the second character as the story's ethical centre while keeping the first as its narrator and engine, a division of labour worth stealing.
Tolkien's Samwise Gamgee shows the loyal variant. Frodo carries the ring, but Sam carries Frodo, and by the final stretch the point of view, the decisions and the courage are increasingly his. A deuteragonist of this kind functions as the story's second spine: when the protagonist is broken, the narrative does not collapse, because the reader's investment has been quietly banked in two accounts all along.
What the second character is for
A deuteragonist gives the story a second lens. Through their reactions the protagonist is measured, contradicted and revealed; through their independent want, the plot gains a second engine that can run when the first stalls. They also carry counterweight: the theme's other answer. Where the protagonist believes one thing about courage or loyalty or money, a well-built second believes something else, and the friction between them is the story thinking.
The risks run in both directions. A deuteragonist with no independent want collapses into a sidekick, an accessory with dialogue. One with too much gravitational pull can hijack the book, leaving readers wishing the story had followed the more interesting person, though a writer who notices this in draft has also discovered something useful: perhaps it should.
How to build yours
Give the deuteragonist a want the protagonist does not share and cannot grant. Jim wants freedom; Sam wants the garden and the girl at home; neither desire is on the hero's gift list, and that independence is what makes them people rather than equipment. Then arrange at least one genuine collision, a scene where the two central characters want incompatible things, because the relationship the reader remembers is forged in disagreement, not assistance.
The trap to avoid is symmetrical page time. Second does not mean half; it means most important after. Let scenes belong to the protagonist while the deuteragonist earns fewer, sharper moments. In a short story the whole apparatus compresses to this: one other person who matters, who wants something of their own, and whose final position, beside the hero or against them, gives the ending its weight.
Deuteragonist, sidekick, foil, second protagonist
A sidekick is defined by function, assisting the hero, and may be minor; a deuteragonist is defined by importance and may oppose the hero entirely. Many sidekicks are deuteragonists, but a rival, a love interest or even the antagonist can hold the second slot instead. A foil is defined by contrast, existing to highlight the protagonist's qualities; a good deuteragonist usually does foil work, but foils can be tiny roles.
The dual protagonist structure is the true boundary case. When two characters share the story's centre equally, alternating viewpoints with equal claim on the ending, neither is second and the term stops applying. If you cannot say whose story it is, you have partners, not a deuteragonist, and the craft questions change accordingly.
A quick diagnostic for your own draft: remove each major character on paper and ask what the story loses. Losing the protagonist ends the story; losing the deuteragonist changes what the story means. Losing anyone else should merely change logistics. If removing your supposed second character only costs you some errands and a few jokes, the slot is vacant, and the draft is probably feeling thin for exactly that reason.
What poets can take from this
- Give your second character a want the hero cannot grant and does not share.
- Write at least one scene where the two central characters collide over something real.
- Let the deuteragonist carry the theme's counterargument.
- Second means most important after the lead, not equal page time.
- If the second keeps stealing scenes, consider whether the story is theirs.
Try it yourself
Write a story narrated by the obvious hero in which every decisive act, the risk, the sacrifice, the final choice, is quietly made by the second character, and let the narrator only half notice.
Questions
Can the antagonist be the deuteragonist?
Yes. The deuteragonist is simply the second most important character, and in duel-shaped stories, detective and murderer, rival siblings, that slot belongs to the opposition. Importance and allegiance are separate axes.
Is a deuteragonist necessary in a short story?
Not strictly; flash fiction often runs on a single consciousness. But most short stories benefit from one other person who genuinely matters, because relationships dramatise character faster than introspection. One protagonist, one significant other, honest stock for the rest is a reliable short story cast.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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