No AI · Every piece hand-made
Available for Commissions
Nadir
Axiom
by Daniel Portero
Human-made, as it was always meant to be.
Digital painting · Personal work
Portrait study, 2026
Available for Commissions
by Daniel Portero
Human-made, as it was always meant to be.
Selected works
Click on any piece to view the full image.
Branding · Identity
2026
Digital Illustration · Personal Work
2023
Graphic Design · Client Work
2026
Digital Illustration · Character Design
2025
Branding · Personal Project
2022
Digital Illustration · Personal Work
2025
Digital Illustration · Unfinished
2023
Digital Illustration · Character Design
2026
Digital Illustration · Character Design
2026
Digital Illustration · OC Redraw (credit @Skelhumans)
2026
Digital Illustration · Character Design
2021–2022
Digital Illustration · Cover Design (Unreleased Webtoon)
2024
Digital Painting · Self Portrait
2020
Digital Illustration · Self Portrait
2022
Digital Illustration · Character Design (Madrid Crea 2024 Game Jam)
2024
Digital Illustration · Original Character
2020
Digital Illustration · Lost Work (WIP Screenshot Only)
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Digital Illustration · Freebie (Under 3 Hours)
2026
The artist
"Art the way it was always supposed to be. By one person, for another."
Hello world. My name is Daniel, the lead creative mind of Nadir Axiom. My main interests are digital illustration and graphic design, though I also love painting in traditional mediums such as acrylic and oils.
Based in Madrid, my workflow is very client oriented, shipping and collaborating worldwide. Whether it's a commissioned painting or a complete visual identity, everything is human-made, as it was always meant to be. :]
I think you can also tell what my favourite colour is... 🤨
Previously known as Katarsis Workshop. If you have come across signed work with that name, it is the same artist. The name changed, the work did not.
What I do
Brand identities, logos, visual systems. Built to last and work across every format.
Character design, concept art, editorial illustration. Everything drawn by hand.
Got something specific in mind? Send a message and we'll work it out together.
Original acrylic paintings on canvas. One of a kind, made entirely by hand.
Traditional oil on canvas. Slow, deliberate, permanent.
Based in Madrid, working with clients everywhere. Digital delivery or physical shipping.
Prices
All prices in EUR. Final quote depends on complexity. Commercial use fees apply on top of base price. Get in touch for a custom quote.
| Service | Cartoony | Semi-Realism |
|---|---|---|
| Sketch Headshot | €8 | €15 |
| Sketch Bust | €12 | €25 |
| Sketch Half Body | €15 | €30 |
| Sketch Full Body | €25 | €40 |
| Flat Color Headshot | €15 | €30 |
| Flat Color Bust | €25 | €45 |
| Flat Color Half Body | €30 | €60 |
| Flat Color Full Body | €45 | €75 |
| Rendered Headshot | €30 | €55 |
| Rendered Bust | €40 | €75 |
| Rendered Half Body | €55 | €100 |
| Rendered Full Body | €70 | €135 |
| Service | Price |
|---|---|
| Extra Character | +60% |
| Third Character | +50% |
| Fourth+ Character | Custom Quote |
| Service | Price |
|---|---|
| Outfit Design | €35–70 |
| Character Concept | €50–100 |
| Detailed Character Design | €85–170 |
| Reference Sheet | €100–200 |
| Turnaround Sheet | €150–250 |
| Service | Price |
|---|---|
| Simple Scene | €65–120 |
| Full Illustration | €120–280 |
| Detailed Environment | €85–200 |
| Character + Background | €150–320 |
| Book Cover Illustration | €170–400 |
| Service | Price |
|---|---|
| Twitch/Discord Emote | €12–20 each |
| 5 Emotes Bundle | €50–80 |
| Sticker Design | €12–25 |
| Chibi Character | €18–40 |
Not sure what you need, or is your project more complex? Send me a message and we will figure it out together.
Contact
If you have a project in mind (an identity, an illustration, a collaboration, etc...) write to me. I reply to every message.