TL;DR
Don’t try to invent everything from scratch.
Start with a recognizable trope, then add your unique twist.
When designing a character, answer five questions:
- Archetype – Who are they?
- Tropes – What familiar pattern defines them?
- Strengths & Weaknesses – What are they good and bad at?
- Problem – What situation are they stuck in?
- Objective – What are they trying to achieve?
Tropes are the foundation.
Twists are the uniqueness.
Hi, my fellow AI character creators. I wrote this article to share my process for coming up with ideas to create a unique AI character.
In this article, we will not discuss the technical aspects of creating one, but instead focus on how to brainstorm ideas. If you are just trying to make an AI character and don't know what to write or where to start, you can check out this article:
https://www.seaart.ai/articleDetail/csf6kjte878c73csu9ig
I wrote that article a long time ago, so it might be a bit outdated, but the tips are still useful.
Normally, it takes me about an hour to write a character, but coming up with an idea that is worth working on can take forever—especially when SeaArt already has millions of AI characters, and recent censorship has placed certain limitations on creativity.
Since this is a work of passion, you probably don’t want your character to be easily recognized as something whose genre is already displayed on the featured page, right?
The process of coming up with an idea can be tedious and tiresome. I hope this article helps you find joy in that process—like an alchemist brewing an unexpected potion.
To understand the character we are going to create, we need to break the idea down and answer a few key questions:
- What is the character archetype?
- What tropes or stereotypes define the character?
- What are the character’s strengths and weaknesses?
- What is the character’s problem?
- What is the character’s objective?
What is the character archetype?
This is the most obvious question to answer. The purpose is to identify a recognizable character role that people immediately understand. For example: the hero, the anti-hero, the sage, the ruler, or the outlaw.
On SeaArt, however, some of the most popular archetypes tend to be things like the lover, the wife, the stepsister, or the stepmother.
What tropes or stereotypes define the character?
This question usually takes the most time during my creation process because it actually includes almost everything about the character. Many users even tell me that the 40,000 characters SeaArt gives us are still not enough.
In my early days of creating AI characters, I believed it was better to write everything from scratch in order to create a truly unique character. Using stereotypes or tropes felt like it would make the character too similar to others, right?
But to be honest, you and I are probably not professional writers or storytellers. Meanwhile, LLMs are trained on vast amounts of text and storytelling patterns. What we think is completely unique may actually fall into a stereotype or trope that we simply don’t recognize.
In a way, we are like Sun Wukong trying to escape the palm of Buddha—no matter how far we think we’ve gone, we might still be within a pattern that already exists. (Sorry for the metaphor—it only makes sense if you know Journey to the West, lol.)
So, for example, you want to create a hero who is shamelessly naughty—someone with a dirty mind, flirtatious, and sometimes vulgar. But when danger appears, they become reliable, serious, and truly heroic. They always put themselves on the front line to protect others.
Now you could write 20+ personality traits or a paragraph of 200 characters to describe this character.
Or you could simply write:
{{char}} is a heroic character who embodies the "chivalrous pervert" trope.
Immediately, a very clear image appears. It’s like Jiraiya from Naruto, Sanji from One Piece, or Ryo Saeba from City Hunter.
They’re all famous characters, right? If you can recognize the trope instantly, the AI can probably understand it even better than we can.
In conclusion, words like tsundere, yandere, or girl next door often work better than writing a long list of personality traits. These tropes already carry a lot of meaning.
Don’t waste space writing things the AI already understands. Instead, write the details it might not know.
For example, your chivalrous pervert might only be interested in… orcs, not humans. That’s something the trope alone wouldn’t tell us—so write it down. That’s where the unique aspect of your character appears.
Use tropes for the foundation, and uniqueness for the twist.
Next time you create a character, try asking AI to help you identify the relevant trope first. It can save a lot of characters, right?
If you follow this technique, you might even find that 40,000 characters start to feel hard to fill, because you are only writing the parts that are unique twists rather than repeating what the AI already understands.
What are the character’s strengths and weaknesses?
Once you know the archetype and the trope, the next step is to define the character’s strengths and weaknesses.
Luckily, this part is usually much easier because many tropes already imply certain traits. If you tell the AI that your character is a “chivalrous pervert,” it already understands a lot of things.
The character is probably brave, protective, and willing to risk themselves for others. At the same time, they might be shameless, easily distracted by attractive people, and often get into trouble because of their behavior.
So instead of writing a long explanation, you only need to clarify or adjust the traits when necessary.
What is the character’s problem?
Answer this question, and you will have the world of the character, the first message, and the scenario.
In fact, this is often the thing I think about before the main character itself. I am a plot-driven writer.
Let’s take the chivalrous pervert hero as an example. What kind of problem would align with both their strengths and weaknesses?
One possibility is this: they flirt with everyone because they are afraid of the truth—that they once failed to protect the person they truly loved. Their vulgar jokes and shameless behavior are just a facade, a way to avoid facing that pain.
Then they meet {{user}}, someone who looks very much like the person they lost. Suddenly they are forced to confront the feelings they have been running away from.
And just like that, you now have a conflict, a scenario, and a direction for the story.
This also leads us to another concept you might want to explore: narrative tropes.
What is the character’s objective?
If the problem is the situation the character is trapped in, then the objective is what they want to achieve.
It sounds simple, but it is very important because the objective gives the character direction. Without it, the character will just react to things randomly instead of moving the story forward.
Usually, the objective is directly connected to the character’s problem.
Let’s go back to our chivalrous pervert hero example. If their problem is the guilt of failing to protect someone they loved, then their objective might be to prove to themselves that they can still protect someone important.
It can also be fun for {{user}} to challenge {{char}}’s objective and see how the AI navigates the situation to achieve what {{char}} wants.
Objectives can also be separated into a main objective and -objectives.
Conclusion
By answering these five questions, you already have the core of a character. From there, everything else becomes much easier to write—dialogue, personality details, and even the scenario. In many ways, creating AI characters is like alchemy. You take familiar ingredients, combine them in unexpected ways, and sometimes discover something entirely new.
So don’t worry too much about trying to be completely original. Start with what people already recognize, then add your own twist. That is often where the most interesting characters are born.
Sources / Further Reading
- The Hero with a Thousand Faces by Joseph Campbell
- TV Tropes — https://tvtropes.org/ ( Read this page and pick a random trope to create your character. It's surprisingly fun )
- https://www.seaart.ai/character/details/d2hlemte878c738lq380 (This are AI character I write entirely in tropes. There are 6 playable characters, each with unique personalities, strengths, and weaknesses, and I use 4,000 characters. The tropes include: Trophy Wife, Rich Socialite Antagonist, High-Society Queen Bee, Maternal Narcissist, Narcissistic Parent, Golden Child, Conditional Love Parent, Image-Obsessed Parent, Insecure Social Climber, Status Anxiety, Puppet Master, and Mean Girl.)
- This is the template I wrote...with the AI's support, of course. You can use it by writing briefly about your character and asking the AI to fill in the blanks : {{char}} is a [base archetype] with a twist — [unexpected trait]. They behave like a [stereotype] but subvert expectations by [unique trait or backstory]. They embody tropes such as [trope 1], [trope 2], [trope 3]. Though they [dominant behavior], they [secret inner trait], making them more than just a stereotype.












