Free Undertale Coloring Pages: 76 printable PDF designs drawn from Toby Fox’s indie RPG, covering Frisk, Sans, Toriel, Flowey, Asriel, Undyne, and Mettaton alongside dozens of smaller monsters from the Ruins, Snowdin, Waterfall, and Hotland. Every design opens as a print-ready PDF, and the same pages can be colored directly in a web browser.
Undertale launched on September 15, 2015, after a 2013 Kickstarter campaign that raised more than $51,000. Toby Fox wrote, programmed, and scored most of the game, with artist Temmie Chang contributing key artwork, and its story follows a human child who falls into an underground kingdom of monsters and can finish the adventure without hurting anyone.
That gentle twist shapes this collection. Nearly every monster here can be befriended instead of fought, so the pages lean toward silly, expressive creatures, from a shy ghost and a flirting airplane to a crowd of sleepy, snowy, and fiery foes, with only a handful of eerie designs saved for older players.
What’s Inside This Collection
Here, the lineup runs from the story’s central characters to its shopkeepers, regional monsters, fan-favorite versions of Sans, and a few strange experiments from late in the game.
Frisk, Toriel, Flowey, and Asriel
The opening chapter of the game comes alive through Frisk, the caretaker Toriel, the smiling flower Flowey, and Toriel’s son Asriel. Give Frisk a Blue sweater with Violet (Purple) stripes, robe Toriel in Purple with white sleeves, color Flowey’s petals Dandelion around a cream face, and dress Asriel in a Green shirt with Yellow stripes.
Sans and His Variations
Sans stars in solo pages, scenes with Frisk, and fan-made versions such as Kawaii Sans and Ink Sans. Keep his skull white, his hoodie Cerulean, his shorts Black, and his slippers Carnation Pink, then add extra color only on the fan versions, as the paint splashes on Ink Sans.
Undyne, Mettaton, and Boss Battles
The bigger fights include Undyne, Mettaton in several forms, Photoshop Flowey, the God of Hyperdeath, and a Gaster Blaster. Color Undyne with Cerulean skin, a bright Red ponytail, and gray armor, and use Hot Magenta and Black for Mettaton’s glamorous forms.
Shopkeepers and Townsfolk
Characters like Grillby, Burgerpants, Gerson, Nice Cream Guy, Temmie, and Napstablook bring the towns of the Underground to life. Grillby’s flame head works well from Yellow at the center to Orange at the edges, and Napstablook needs little more than soft Gray with dark eyes.
Monsters Across the Underground
The largest part of the set gathers enemies from every area, from Froggit and Whimsun in the Ruins to Snowdrake and Ice Cap in Snowdin, Shyren and Woshua in Waterfall, and Vulkin and Muffet in Hotland. Snowy monsters suit pale Sky Blue and White, while Hotland creatures look best in warm Orange, Red, and Purple.
Amalgamates
Lemon Bread, Endogeny, and Memoryhead are the unsettling creatures found deep in the game’s hidden laboratory. These pages suit older fans and look most striking in limited grays and pale tones rather than bright colors.
What Undertale Coloring Pages Do
Kindness over combat. Undertale lets players spare every monster by talking, joking, or complimenting them instead of fighting. Coloring the cast with that idea in mind opens an easy family conversation about empathy and seeing the person behind a scary first impression.
Hand control on small shapes. Building fine motor skills ranks among the clearest gains from structured coloring for kids aged 2 to 7, a point the American Academy of Pediatrics makes about early childhood. Tiny monsters like Froggit or Whimsun offer quick, simple shapes, while Mettaton and the boss pages demand slower, more careful lines.
A relaxing session with familiar faces. Reduced anxiety after structured coloring was documented in a 2005 Art Therapy Journal study. Coloring well-loved characters from a favorite game makes it easy to settle in and spend a calm stretch of time away from a screen.
Translating pixel art into full color. Most Undertale characters began as small, simple sprites with very few colors. Turning those tiny designs into large, fully colored drawings is a fun exercise in deciding where shading and detail belong.
How to Color Undertale Coloring Pages
- Start with the character’s most distinctive single element. Sans has pink slippers. Undyne has red fins. Grillby has a fire head. These are the things fans identify first. Getting the most recognizable element right anchors the whole page; then, build the rest of the palette around it.
- The monster palette is mostly cool and muted. Most Undertale characters use slightly desaturated, cool-leaning colors: pale blues, grey-greens, cream-whites. The warm monsters (Vulkin’s lava, Pyrope’s red, Grillby’s flame, Nacarat Jester’s orange) stand out because everything around them is cool and muted. Keep the cool monsters in their muted range, and the warm ones will read with more impact.
- For the amalgamate pages, vary light and dark instead of adding colors. Lemon Bread is almost entirely pale yellow. Endogeny is almost entirely grey-white. These pages work through shading: lighter on the raised areas, darker where the merged forms meet. Introducing new colors breaks the unsettling quality of the design.
5 Creative Craft Ideas with Undertale Coloring Pages
1. Main Story Lineup
Color Frisk, Sans, Toriel, Undyne, Flowey, and Asriel in their accurate palettes and arrange them in story order from the beginning of the game to the end.
Six characters, the full emotional arc of the pacifist route. Takes about thirty minutes.
2. Monster Region Set
Color one monster from Snowdin (pale blue-white palette), one from Waterfall (cool mixed), and one from Hotland (warm or fire palette). Keep the regional temperature consistent across all three pages.
Three pages, three color temperatures in sequence. Takes about twenty minutes.
3. Mettaton Form Study
Color Mettaton Overworld EX, Mettaton EX, and Mettaton NEO side by side, using the same pale base body tone across all three. Change only the accent color (pink for EX, red for NEO) to show how the same character shifts from glamorous to militarized.
One character, three forms, one base palette. Takes about twenty minutes.
4. Amalgamate Study
Color Endogeny and Lemon Bread as a pair using only variations in light and dark, no new colors. Lighter on the raised surfaces, darker where the merged forms meet.
Two of the most technically challenging pages in the set. Takes about twenty-five minutes.
5. Sans Variant Gallery
Color all six Sans pages, keeping the skull white and the slippers pink on every version. Change only the jacket and accent details to show how each variant builds on the same base character.
Six variants, one consistent anchor. Takes about thirty-five minutes.
FAQ About Undertale Coloring Pages
Are these Undertale coloring pages free, and can I color them online?
Yes. Every page is free, with no account, email, or payment required. Download the PDF to print at home, or open it in the online coloring tool to color on screen.
What is Undertale?
Undertale is an RPG developed and released by Toby Fox on September 15, 2015. The game follows Frisk, a child who falls into the Underground, a world beneath the surface where monsters live. Undertale is unusual among RPGs because the player can complete the entire game without killing a single enemy, a route known as the pacifist ending.
Who made Undertale?
Undertale was made entirely by one person, Toby Fox. He wrote the code, designed every character, wrote the dialogue, and composed the entire 101-track soundtrack alone. He started development at 21 years old and released the game two and a half years later. The project was funded through a Kickstarter campaign in 2014 that reached its goal in 27 days.
Who are the main characters in Undertale?
The main characters are Frisk, the human child protagonist; Sans, a skeleton and one of the game’s most iconic characters; Toriel, a goat-monster who guides Frisk at the start; Flowey, the main antagonist; Asriel, a goat child connected to the game’s backstory; Undyne, the captain of the royal guard; and Mettaton, a robot entertainer who serves as a major boss.
What is the pacifist route in Undertale?
The pacifist route is a playthrough where the player completes the game without killing any enemies. Instead of fighting, the player uses the ACT command to interact with each monster and resolve the encounter peacefully. It is one of three main endings and is widely considered the game’s true ending.
What is an amalgamate in Undertale?
Amalgamates are monsters that resulted from an experiment gone wrong in the game’s backstory. There are multiple monsters fused into a single form. The amalgamate pages in this set include Lemon Bread, Endogeny, and Memoryhead. Their designs are deliberately unsettling, with multiple merged faces, limbs, and bodies visible in a single form.
Are these official Undertale coloring pages?
No. These are fan-made coloring sheets for personal use and are not affiliated with, licensed by, or endorsed by Toby Fox or any other rights holder of Undertale.
What age group are these pages best suited for?
Undertale coloring pages are best for children aged 8 and up. The amalgamate designs and Photoshop Flowey are unsettling and better suited to older children who know the game. Simpler pages like Froggit, Napstablook, and the rabbit monsters are accessible to younger children.
Start Coloring
Download any page by clicking the design. No account, email, or payment is required. Pages print directly from the browser at full resolution or open in the online coloring tool for screen use. Share finished pages on Facebook or Pinterest using the share buttons at the top of each design page.
