I used to think developing a character meant filling out one of those long character questionnaires — favourite colour, blood type, childhood pet, what they’d order at a restaurant. I’d answer sixty questions and still have no idea who this person was on the page. They had facts but no pulse. If you’ve been there, I want to save you some time: knowing your character’s favourite ice cream flavour will not help you write a better book. Knowing what they’d lie about will.
Learning how to develop a character for a story isn’t about accumulating trivia. It’s about understanding what drives a person, what scares them, what they want badly enough to act on, and where they’re wrong about themselves. That’s the stuff that makes a character feel alive — and it’s the stuff that gives your plot something to push against.
Start With What They Want
Every character worth reading about wants something. Not in a vague “she wants to be happy” way — in a specific, concrete, story-driving way. She wants to find her missing brother. He wants to win the custody battle. She wants to escape the country before the regime closes the borders.
The want is your engine. It’s what gets the character out of bed in the morning and into situations where interesting things happen. Without a clear want, you end up with a character who drifts through scenes reacting to whatever the plot throws at them, and readers can feel the difference between a character who’s driving the story and one who’s being dragged along by it.
I usually separate the want into two layers:
- The external want — the tangible goal. Get the job. Solve the murder. Survive the journey. This is what the plot is built around.
- The internal want — the deeper need they may not even be aware of. To feel worthy. To stop running from grief. To learn to trust someone. This is what the character arc is built around.
The tension between these two is where the magic happens. A character who wants to win a competition (external) but needs to learn that her self-worth isn’t tied to achievement (internal) is going to make choices that create conflict naturally — because what she’s chasing and what she actually needs are pulling in different directions.
Give Them a Flaw That Costs Them Something
Perfect characters are boring. I know you know this intellectually, but it’s surprisingly easy to write a protagonist who’s brave, smart, kind, funny, and good at everything — especially if you like them. We protect characters we love, and that instinct works against the story every time.
A flaw isn’t a cute quirk. “She’s clumsy” is not a flaw that matters unless her clumsiness actually causes problems that affect the plot. A meaningful flaw is a pattern of behaviour or belief that gets in the character’s way — that causes them to make bad decisions, hurt people they care about, or sabotage the thing they want most.
Some flaws I’ve built characters around that actually did work in the story:
- A woman who’s so terrified of conflict that she lets people walk over her until she explodes at the worst possible moment
- A man who’s so focused on being right that he destroys every close relationship he has
- A teenager who lies compulsively — not out of malice, but because she learned early that the truth never protected her
Notice that each of these flaws has a root. The woman avoids conflict because of something in her past. The man needs to be right because being wrong once cost him dearly. The teenager lies because honesty was dangerous in her childhood. That root is what makes a flaw feel human rather than arbitrary, and it gives you somewhere to go with the character arc.
Backstory Is Fuel, Not the Story
Backstory is one of the trickiest parts of figuring out how to develop a character for a story, because you need to know it but you need to resist the urge to dump it all on the reader.
I write extensive backstories for my main characters. Pages of it sometimes. Where they grew up, what their family was like, the formative experiences that shaped their beliefs and fears. I do this because it helps me understand why they behave the way they do in the present-tense story. But most of that backstory never appears on the page — at least not directly.
The reader doesn’t need a flashback to your character’s difficult childhood to understand why she flinches when someone raises their voice. They just need to see her flinch and feel the weight of it. The backstory is in the room even when it’s not on the page, and that invisible presence is what gives a character depth.
A rule I follow: backstory earns its way into the text only when the present-tense story demands it. If a past event is directly relevant to a choice the character is making right now, it can come in — briefly, and woven into the action, not as a standalone flashback that stops the plot cold. Otherwise, it stays in my notes where it belongs.
Voice Makes or Breaks a Character
You can do everything else right — clear want, meaningful flaw, rich backstory — and still end up with a flat character if their voice doesn’t feel distinct. Voice is how a character thinks and speaks, and it’s the thing that makes a reader feel like they’re in the presence of a specific human being rather than a generic placeholder.
Voice shows up in word choice, sentence rhythm, what a character notices and what they ignore, what they find funny, and how they process stress. A cynical ex-cop narrating a crime novel sounds completely different from a sheltered eighteen-year-old narrating a coming-of-age story — not just in what they say, but in how their minds move through a scene.
When I ghostwrote a memoir for a retired firefighter, the biggest challenge wasn’t getting the facts right — it was capturing how he talked and thought. He spoke in short, blunt sentences. He described emergencies with clinical calm and fell apart talking about his daughter’s wedding. He never used a metaphor in his life. Getting his voice right meant stripping out every instinct I had toward literary prose and writing the way he experienced the world — direct, physical, unsentimental except when it caught him off guard.
A few things that help me nail voice:
- Write a page of stream-of-consciousness from your character’s perspective. Don’t plan it. Just let them think on the page. What comes out will tell you a lot about how their mind works.
- Pay attention to what they wouldn’t say. A reserved character won’t narrate their emotions directly. A blunt character won’t soften their language. The absences are as revealing as the words.
- Read your character’s dialogue out loud. If you stumble or it sounds like it could come from anyone, the voice isn’t specific enough yet.
Characters Exist in Relationship to Other People
One mistake I made early on was developing characters in isolation — building each one as a standalone profile and then putting them together in scenes. The problem with that approach is that people don’t exist in isolation. Who we are shifts depending on who we’re with, and your characters should do the same.
A character who’s confident and sharp at work might be awkward and unsure at a family dinner. Someone who’s gentle with their kids might be ruthless in a negotiation. These contradictions aren’t inconsistencies — they’re what makes a character feel three-dimensional.
When I’m developing a cast, I think about each significant relationship as its own dynamic. What does Character A bring out in Character B? What do they avoid talking about? Where’s the tension, and where’s the ease? A lot of characterisation happens not in how you describe someone but in how they behave differently around different people.
The most useful exercise I’ve found for this: write the same scene twice from two different characters’ perspectives. A dinner, an argument, a car ride — anything where they’re together. You’ll quickly see where their perceptions clash, and that clash is where the interesting stuff lives.
The Arc Is the Character Changing Under Pressure
A character arc is just a fancy way of saying: this person is different at the end of the story than they were at the beginning, and the events of the story are what changed them.
Not every character needs a dramatic transformation. Sometimes the arc is subtle — a small shift in perspective, a new willingness to be vulnerable, a quiet letting go of something they’ve been carrying. But something has to move. A character who goes through an entire novel and comes out exactly the same on the other side leaves the reader feeling like the story didn’t matter.
The arc should connect to the flaw and the internal want. If her flaw is that she can’t trust anyone, the arc might take her from isolation to letting one person in — not a total personality overhaul, just a crack in the wall. If his flaw is arrogance, the arc might humble him through failure without turning him into a completely different person.
I plan arcs loosely. I know roughly where the character starts emotionally, the key moments that challenge their beliefs, and where I want them to land. But I leave room for the draft to surprise me. Some of the best character moments I’ve written weren’t planned — they emerged because I knew the character well enough that their reaction to a situation I hadn’t anticipated felt inevitable.
Common Mistakes That Flatten Characters
After years of writing and ghostwriting, I’ve seen the same character development problems show up repeatedly — in my own work and in manuscripts I’ve been hired to fix. These are the ones that do the most damage.
Telling the Reader Who the Character Is Instead of Showing Them
“Sarah was brave and independent” tells me nothing I’ll believe. Sarah sprinting into a burning building to grab her neighbour’s dog while everyone else stands on the pavement — that I believe. Characters are defined by their actions under pressure, not by adjectives in the narration.
Mistaking Backstory for Personality
A tragic past doesn’t automatically make a character interesting. What makes them interesting is how they carry it. Two characters can have the same traumatic childhood and respond in completely different ways — one shuts down, the other overcompensates with control. The backstory is the cause. The personality is the effect. Don’t confuse the two.
Making Side Characters Into Furniture
Your supporting cast doesn’t need the same depth as your protagonist, but they do need to feel like they have lives beyond their function in the plot. The best side characters have at least one clear want and one clear trait that makes them feel like a person rather than a prop. If a side character exists only to deliver information or support the main character, the reader will notice the flatness even if they can’t articulate why.
Changing the Character to Serve the Plot
This one hurts because it usually happens when you’re deep in a draft and you need the character to do something they wouldn’t do for the plot to work. So you force it. And the reader feels the gears grinding. If your character wouldn’t realistically make the choice the plot needs them to make, the problem is with the plot, not the character. Go back and change the circumstances until the choice makes sense.
The Character Is the Story
At the end of the day, figuring out how to develop a character for a story is really figuring out what your story is about — because they’re the same thing. The character’s want drives the plot. The character’s flaw creates the conflict. The character’s arc gives the story meaning. Get the character right and half your structural problems solve themselves. Get them wrong and no amount of clever plotting will save you.
I think back to those character questionnaires I used to fill out, listing favourite foods and zodiac signs, and I don’t regret them entirely — they were me trying to know my characters the only way I knew how at the time. But what I wish I’d understood sooner is that a character doesn’t come alive through details about them. They come alive through what they do when things get hard, what they’re willing to lose, and how they change when the story won’t let them stay the same.
That’s the work. It’s harder than filling out a questionnaire. But it’s the reason people remember characters for years after they close the book.