"That character had no development." "That was amazing character development." Fans use these phrases all the time, and they can mean a dozen different things. This guide pins the idea down: what development is, the shapes it takes, what it looks like on the page or screen, and why some arcs feel earned while others feel fake.
A working definition: character development is the visible change in a character's beliefs, behaviour, abilities or relationships across a story, caused by what happens in it. The change has to be earned on the page, not announced by another character. And it doesn't have to be growth in the "becoming nicer" sense. A villain who hardens is developing too.
- Core idea
- Change caused by events and choices
- Main arc shapes
- Positive, flat, negative
- Engine of change
- The gap between what a character wants and what they need
- Classic example
- Zuko, Avatar: The Last Airbender
Two meanings: change and depth
People use "character development" in two senses, and it helps to separate them.
Development as change
What happens to a character over the story: they learn, break, grow, harden or heal. This is the arc. You can only see it by comparing the character at two points in time.
Development as depth
How fully a character is realised: their history, contradictions, voice and inner life. A character can be deep without changing at all. Sherlock Holmes barely changes and is still richly drawn.
The novelist E. M. Forster called characters with depth "round" and simple ones "flat". That is a different idea from a "flat arc" (below), and mixing the two up causes a lot of arguments. A round character can have a flat arc. A one-note character can technically change. The best characters are round and have a clear arc.
The main types of character arc
Almost every well-known arc fits one of a few shapes. The terms come from writing craft, especially K. M. Weiland's widely used breakdown, and they work across novels, anime, cartoons, film and games.
Positive change arc
Starts with a false belief · Ends free of it
The character believes something untrue about themselves or the world. The story puts pressure on that belief until they let it go and become more whole. This is the most common arc in fiction, and the one people usually mean by "growth."
- Examples
- Zuko (Avatar), Vegeta (Dragon Ball), Katsuki Bakugo (My Hero Academia)
Flat arc
Already holds the truth · Changes the world instead
The character starts with a settled, true belief, and the story tests whether it can survive. They don't change much; the people around them do. Done badly, it reads as "no development." Done well, it's deeply satisfying.
- Examples
- Aang (Avatar), Steve Rogers (Captain America films), Paddington
Disillusionment arc
Learns a hard truth · Ends sadder but wiser
The character overcomes a false belief, but the truth they find is bleak. They end more clear-sighted and less happy. It's a negative arc in mood, not in morality.
- Examples
- Nick Carraway (The Great Gatsby), Jesse Pinkman (Breaking Bad)
Fall arc
Clings to a lie · Is destroyed by it
The character is offered the truth and refuses it, doubling down on a false belief until it ruins them or everyone around them. Tragedy in the classical sense.
- Examples
- Light Yagami (Death Note), Anakin Skywalker (Star Wars prequels)
Corruption arc
Starts with the truth · Trades it for a lie
The character begins decent and, step by step, chooses something worse. The audience watches each compromise land. The hardest arc to write, because sympathy erodes as it goes.
- Examples
- Walter White (Breaking Bad), Michael Corleone (The Godfather)
Healing arc
Wounded · Learns to live with it
A variant of the positive arc where the "lie" is a wound: grief, trauma or guilt. The goal isn't to become a new person but to stop being ruled by the past.
- Examples
- Carl Fredricksen (Up), Abuela Alma (Encanto)
The engine: lie, want, need and ghost
Most arcs run on four parts. If a character's development feels flat, one of these is usually missing.
| Part | What it is | Zuko's version |
|---|---|---|
| Ghost (wound) | The past event that created the false belief | Being burned and banished by his father |
| Lie | What the character wrongly believes | "My honour depends on my father's approval" |
| Want | The conscious goal, shaped by the lie | Capture the Avatar and go home |
| Need | What would actually fix them | To decide for himself what is right |
The arc lives in the gap between want and need. In a positive arc, the character gives up the want (or gets it and finds it hollow) and embraces the need. In a fall arc, they choose the want over the need, again and again. Zuko's pivotal moment comes in season 3, when he finally has his father's approval and realises it doesn't mean what he thought.
Static vs dynamic characters
Dynamic
Changes meaningfully during the story. Leads in coming-of-age stories, redemption stories and tragedies are almost always dynamic.
Examples: Zuko, Eren Yeager, Bakugo.
Static
Stays essentially the same. Static characters act as fixed points that make other characters' changes visible. Mentors, comic relief and many villains are static on purpose.
Examples: Iroh, Ozai, Patrick Star.
Static is not an insult. A story where everyone changes has nothing stable to measure change against.
What real change looks like
Development is shown, not announced. A line a character says in episode 2 should sound wrong in their mouth by episode 50. These are the signals readers actually notice:
- What makes them angry. Bakugo is still explosive at the end of My Hero Academia, but what sets him off has changed. Same temperament, different values.
- Who they protect at a cost. A character who would have walked away in season one and now stays has changed. The reverse is change too, and often the more interesting kind.
- What they admit they don't know. Asking for help, or saying "I was wrong," is the cheapest and most reliable signal of growth.
- How they handle power. A character who gets stronger and keeps acting the same has changed less than one who adjusts because the stakes are now higher.
- How others treat them. When the cast starts trusting someone they used to avoid, the story is confirming the change.
How to write character development
- Choose the arc shape — positive, flat or negative. Decide it before you start, even if you change your mind later.
- Define the lie, want and need — one sentence each. If the want and need are the same, there is no arc.
- Find the ghost — the event that taught the lie. It doesn't have to be revealed early, but you must know it.
- Open with the lie in action — show the character making a choice driven by the false belief, so the audience can measure change later.
- Build pressure in stages — each act should make the lie more costly. Give the character problems their current self can't solve.
- Include a relapse — let them slide back at least once. Change that happens in a straight line feels like a switch being flipped.
- Force a choice at the climax — the character must choose between want and need when it costs them something real.
- Show the new normal — end with a mirror of the opening scene so the audience can see the difference without being told.
Worked example: Zuko's arc
Zuko is one of the most studied arcs in modern animation because every stage happens on screen.
- Book One Zuko hunts the Avatar to restore his honour. His lie is fully in charge; Iroh's gentle pushback is ignored.
- Book Two Living as a refugee in the Earth Kingdom, he starts to see the war from below. He comes close to changing, then sides with Azula in the season finale. That betrayal matters: a clean first-attempt turn would have felt cheap.
- Book Three, early He's home and has what he wanted. It feels empty, which proves the want was never the need.
- Book Three, the eclipse He confronts his father, names what was done to him, and leaves.
- Book Three, late He earns trust slowly from a group that has every reason to refuse it, especially Katara, and becomes Aang's firebending teacher.
The real change isn't "he became good." It's that the question he asks himself changes. Early Zuko asks, "How do I win my father's approval?" Late Zuko asks, "What kind of person do I want to be?" Once the question changes, every later decision follows naturally. That's what development looks like when it works.
Where character development goes wrong
- Reset to default. The character changes for an arc, then is back to their old self in the next one. Common in long-running series that need characters to stay familiar for new viewers.
- Told, not shown. Someone says "you've grown so much," and the audience is expected to agree. If you can't name three things the character now does differently, it hasn't happened.
- Solved by power-up. An emotional problem disappears the moment the character gains a new ability. The two are linked in the script but not in the character.
- Off-screen growth. A character leaves for a time-skip and returns wiser, but we never see the work. It can still land if the cast reacts believably to who they've become.
- Change without cause. The character shifts because the plot needs them to, not because anything pushed them. Audiences feel this as "out of character."
- Too much, too fast. A lifelong belief dropped in one conversation. The bigger the lie, the longer it takes to break.
How to read a new character's arc
When you meet a new character and want to guess whether they'll pay off, ask:
- What question do they keep asking themselves? Strong arcs organise around one question whose answer changes by the end.
- What's their first lie? Most arcs introduce a character with a small self-deception. The arc is that lie slowly breaking.
- Who would they have ignored in episode one? Track whether they engage with those people later.
- Have they been given a problem their current skills can't solve? If so, growth is coming. If every problem fits their existing toolkit, you're watching a flat arc.
Rivalries are one of the best engines for development in long stories, because each rival keeps forcing the other to change; see iconic rivalries. For how a character's role in the cast shapes their arc, see character archetypes.
Frequently asked questions
What is character development?
Character development is the visible change in a character's beliefs, behaviour, abilities or relationships over the course of a story, caused by what happens to them. It can also mean the writer's work of giving a character depth. The change doesn't have to be positive; a character who becomes worse is also developing.
What are the three types of character arcs?
The positive (change) arc, where a character overcomes a false belief and grows; the flat arc, where a character's beliefs stay steady and they change the world around them instead; and the negative arc, where a character ends worse off, through disillusionment, a fall or corruption.
What is the difference between a static and a dynamic character?
A dynamic character changes in an important way during the story. A static character stays essentially the same. Static isn't a flaw: mentors, comic relief and many villains are static by design, and a flat-arc protagonist is often static on the inside while changing everyone around them.
What is a good example of character development?
Zuko in Avatar: The Last Airbender is the most cited example. He starts obsessed with winning his father's approval and ends by choosing his own values, after relapses, a betrayal and a long effort to earn back trust. Vegeta in Dragon Ball and Bakugo in My Hero Academia are other well-known examples.
Can a villain have character development?
Yes. Villains can develop toward redemption, like Vegeta, or deeper into villainy, like Light Yagami in Death Note. A villain who stays exactly the same can also work, as long as the heroes are the ones changing.
Is a flat arc bad writing?
No. A flat arc means the protagonist already holds the truth and the story tests it. Aang, Captain America and Paddington are all flat-arc leads. The change happens in the people and the world around them.