Nathaniel is fairly short with turquoise eyes and messy red orange hair. He has long bangs that are brushed to the left side of his face. He wears a red t-shirt with a black design on the front. Over his shirt, he wears a gray dress jacket with a folded collar, folded sleeves, and side pockets. He wears purple jeans that are rolled up at the bottom, and his shoes are gray with white lace and a white section where his toes would be.
First appearance: "The Evillustrator"
Caprikid
Caprikid wears a skin-tight suit composed of black pants and a black jacket with two thick white lines that go up diagonally from the bottom of his zipper to his shoulders. The jacket possesses a bushy white fur collar around his neck and at the ends of his sleeves. The zipper itself is a hollow upward pointing white triangle. His mask is mainly white, covering his eyes, with a V-shaped black section in the top/center. He also wears white gloves. His black boots also have white fur at their top and white soles. His hair remains red, covering most of the left side of his face. He has two gray goat-like horns going up with a small curve off the top of his head.
Full appearance.
First appearance: "Penalteam"
Evillustrator
The Evillustrator's skin is light purple, and his hair is brushed back while colored orange with purple tips. On his head he has a black beret, and on his face, he has a black butterfly-shaped mask. He wears a white suit with black stripes and solid black legs that become red halfway down his lower legs. On his chest, there is a black circle with smaller red, yellow, and blue circles inside. His collar is swan-necked, with a red collar underneath. A black drawing tablet is attached to the back of his right forearm. His pen is silver towards the tip, with the end being black with a red stripe in the middle.
Full appearance.
Drawing tablet and pen.
First appearance: "The Evillustrator"
Knight minion
Transformed by Darkblade, Nathaniel becomes a knight in dark gray armor with bright green designs on his epaulet and helmet.
Only appearance: "Darkblade"
Younger Nathaniel
Nathaniel wears an outfit similar to his regular clothes. His hair is slightly longer, and he wears a purple t-shirt with an orange collar and a black design on the front.
Only appearance: "Reflekta"
Reflekta duplicate
After Reflekta zaps Nathaniel, he takes on a feminine appearance becoming a physical copy of her.
Nathaniel wears an outfit similar to his regular clothes. However, his shoes are tan with white lace and a white section where his toes would be. Also, his hair is styled the same but with a cowlick on top.
Nathaniel's drawing book bag is black with white trims along the border of the spine. On the front, a white design with a stick-like figure that is positioned on the lower left corner.
First appearance: "The Evillustrator"
Messenger bag
Nathaniel's medium-sized messenger bag is a sky blue color. It has gray trim around the opening flap, the bottom corners of the bag, and the strap. The bottom edge of the flap is also gray.
First appearance: "The Evillustrator"
Binder Folder
Nathaniel's binder folder is green with with small black dots all over the front and back covers. The folder's spine and corners are also black.
First appearance: "Rogercop"
Blue and red handcuffs
Rogercop accidentally attaches a pair of handcuffs to the Evillustrator's wrists that has no chain, a glowing red left cuff, and a glowing blue right cuff.
Only appearance: "The Puppeteer"
Cat Noir mask
In addition to his regular attire, Nathaniel wears a mask similar to that of Cat Noir.
Only appearance: "Frightningale"
Heroes' Day pin
To commemorate the celebration of Heroes' Day, Nathaniel wears a pin that has the French flag, with a blue and white silhouette of the French Imperial Eagle symbol.
First appearance: "Catalyst (Heroes' Day - Part 1)"
Final imaginary designs
Mightillustrator
Mightillustrator looks like the Evillustrator, the main difference being that Mightillustrator has large white angel wings.
Only appearance: "Reverser"
Fairy Godmother
Nathaniel wears a red tunic and has red transparent fairy wings.
Nathaniel's comic book appearance is the same as his appearance in the television series.
First appearance: "Miraculous Adventures/Issue 2"
Conceptual designs
Older Caprikid concept
This older version of Caprikid has curled horizontal horns rather than vertical pointy ones, goat ears, a white mask with vertical grey sections on each side, and no fur whatsoever.