How a Software Engineer Is Building His Own Animated Series with a Cat and a Seal

Guillaume always wanted to make an animated show but had no animation training. With consistent characters and video generation, Felix the cat and Barry the seal are now a running series on TikTok.

How a Software Engineer Is Building His Own Animated Series with a Cat and a Seal
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An Animated Show, Built Without an Animation Team

Most people who dream of making an animated series never start. The ideas are usually there. What stops them is the work: character design, keeping a character consistent across hundreds of frames, backgrounds, props, camera angles. Traditionally, that takes a studio or years of training.
For Guillaume Fort, the gap between the idea and the execution was the whole problem for a long time.

Meet Guillaume

Guillaume is a software engineer. He loves the creative process of building something from scratch, and he holds his projects to a high bar.
"I really lean towards building something good with high quality and not something random that will get forgotten."
He had always wanted to learn and build an animation show. Without animation knowledge, it was, in his words, "pretty hard."
AI tools changed that. The skills he didn't have stopped being the thing that blocked him.

It Started with a Seal

The series began with a single character: Barry the seal.
Clothing, backgrounds, props, scenes. He worked through every feature step by step, learning what the tool could do.
Then came Felix the cat, and the two of them became a duo.
Barry and Felix across four keyframes: the beach, the pool, the bedroom, the gym. Same two characters, four settings, four outfits and props.
Barry and Felix across four keyframes: the beach, the pool, the bedroom, the gym. Same two characters, four settings, four outfits and props.
The show is pure silly comedy. Guillaume wants people to laugh and have a good time watching it. He is also thinking further ahead.
"I am also hoping to develop the characters and story so that people end up loving the characters and want to follow their adventures."
That is how most animated shows that last are built. Get people attached to the characters, and they will come back for whatever the characters do next.

What Open Source Models Couldn't Do

Guillaume is technical. Before Neolemon, he had tried many open source image and character models. None of them held up for a series.
"I have tried many open source models for characters and image generation but none have the consistency and possibilities to add clothing, background and objects like Neolemon does."
For a one-off image, an inconsistent character is a minor annoyance. For an animated series, where the same two characters need to appear in sketch after sketch in different outfits, settings and camera angles, it makes the project impossible.
In Neolemon, Felix and Barry look like Felix and Barry every time. He can dress them and place objects in a scene without redesigning them. And he can change the camera angle on a character and get the same character back.
"I loved seeing the characters brought to life with the quality of Neolemon image generation. The characters consistency and possibility to add clothing and change the camera view is what does it for me."

From Still Images to Video

Once the characters were locked, Guillaume integrated video generation into his workflow. Consistency in stills became the foundation for motion.
His engineering background shows in how he organises the work. Each episode gets its own folder of keyframes, numbered in sequence (start, sliding, faster, too fast, overshoot, crash), plus intro and talk scenes. A script ties the pieces together. By the time he shared his story, season two of the series was already past episode 30.
Behind the scenes: Guillaume's episode pipeline, with keyframes for a single sketch open on the right.
Behind the scenes: Guillaume's episode pipeline, with keyframes for a single sketch open on the right.
If you are working on your own series, this is the part of his process worth copying: build and test the characters in still images first. Get the outfits, backgrounds and camera angles working before you touch video. A character that is stable in stills is far more likely to stay stable in motion.

Getting Attached to Your Own Characters

When we asked Guillaume how it felt to see the series come together, his answer was short:
"Felt amazing. I got really attached to my characters and would love to create more."
Barry at the gym. Felix is not helping.
Barry at the gym. Felix is not helping.
That attachment matters. When a creator loves the characters, the audience usually follows.
A few days before sharing his story, Guillaume also left an unprompted review on Trustpilot.
Five-star Trustpilot review from Guillaume Fort dated August 26, 2026, titled "Amazing tool to bring ideas to life." He writes that he has been using Neolemon for a few months, mostly to build cartoon animation for his TikTok channel @barry.theseal, that the consistency in characters is really great compared to other models, that new features are added often which allows for more experiments, and that he highly recommends it.
Five-star Trustpilot review from Guillaume Fort dated August 26, 2026, titled "Amazing tool to bring ideas to life." He writes that he has been using Neolemon for a few months, mostly to build cartoon animation for his TikTok channel @barry.theseal, that the consistency in characters is really great compared to other models, that new features are added often which allows for more experiments, and that he highly recommends it.

What's Next for Felix and Barry

Guillaume is keeping the channel going, working on new characters, and steadily improving sketch quality. His goal, in his own words, is "a real animation show."
You can follow Felix and Barry on TikTok: @barry.theseal

Ready to Start Your Own Series?

Guillaume's story shows that you don't need to be an animator to make animation. You need characters that stay consistent, tools that let you dress and stage them, and the patience to start with one seal.
If his story inspired you to start creating, Neolemon is the best place to begin.
Bring your characters to life, keep them consistent, and finally move your story forward.

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