How do I make the Trollhunters armor glow?

You can thread blue LED fairy lights or EL wire through channels in your foam armor, or simply use bright neon blue acrylic paint or glow-in-the-dark paint for a simpler, battery-free option.

What is the Amulet of Daylight made of?

In the show, it is magical metal. For a costume, you can use a 3D-printed replica, a toy version, or craft one from layers of foam and a blue LED puck light.

Is this costume suitable for kids?

Yes, kids love dressing up as Jim. A printed fabric jumpsuit with a plastic mask and toy sword is the most comfortable and practical version for trick-or-treating.

Trollhunters

Trollhunters Costume

Become the protector of Arcadia with glowing blue armor and sword.

Step into the shoes of Jim Lake Jr., the first human Trollhunter from Guillermo del Toro's animated series. This look is highly popular for its heroic fantasy aesthetic, featuring glowing blue-accented silver armor and the legendary Sword of Daylight. The costume consists of a detailed armor suit, a blue undershirt, and a glowing broadsword.

Difficulty: Advanced
Time: ~120 min
Budget: $40–150

See yourself as Trollhunters →What you need Buy the Trollhunters costume

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See yourself as Trollhunters

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You as Trollhunters

Result

What you need for a Trollhunters costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Trollhunters costume — one box instead of 6 pieces.

Shop Trollhunters at Spirit ↗

Silver chest plate armor
A silver-painted chest plate made of lightweight foam or plastic, featuring glowing blue recessed lines.
DIY: Cut armor plates from EVA foam, paint them silver, and use blue LED strip lights or blue puffy paint for the glowing lines.
Amazon
Blue undershirt
A long-sleeved, form-fitting royal blue athletic shirt or turtleneck.
Amazon
Silver gauntlets and greaves
Matching silver arm guards and shin guards with blue trim.
DIY: Wrap craft foam around your forearms and shins, paint silver, and secure with Velcro.
Amazon
Amulet of Daylight
A circular silver amulet with a glowing blue center, worn on the left side of the chest plate.
DIY: Craft a circular amulet out of cardboard or a plastic lid, paint it silver, and insert a blue LED tea light.
Amazon
Sword of Daylight
A large, stylized silver broadsword with a glowing blue blade edge and rune details.
DIY: Cut a sword shape from thick cardboard or foam board, paint the center silver, and paint the edges bright neon blue.
Amazon
Dark pants and boots
Comfortable black or dark grey slim-fit pants paired with sturdy black boots.
DIY: Use any dark jeans and black winter boots you already own.
Amazon

Rather not assemble it? See ready-made Trollhunters costumes at Spirit Halloween ↗

How to put it together

1
Put on the royal blue long-sleeved undershirt and dark pants.
2
Secure the silver greaves over your shins and put on your black boots.
3
Fasten the silver chest plate over your torso, ensuring the Amulet of Daylight is securely attached to the left chest area.
4
Slide the silver gauntlets onto your forearms.
5
Turn on any LED lights integrated into the armor or amulet.
6
Equip the Sword of Daylight, holding it firmly by the hilt.

Makeup & hair

Style your hair into messy, short brown spikes swept slightly to one side. Keep makeup minimal and natural, perhaps adding a small, clean band-aid on your cheek for a battle-ready look.

Trollhunters for couples, groups, kids & more

couples: Pair Jim Lake Jr. with Claire Nuñez in her casual outfit holding her purple-glowing Shadowstaff.
group: Add Toby Domzalski in his orange armor with his warhammer, and a friend in a bulky green troll suit as Blinky or AAARRRGGHH!!!.
kids: Use a pre-made fabric jumpsuit printed with the armor graphics for a comfortable, lightweight kids' version.
Plus size: Use flexible EVA foam for the armor plates to easily custom-fit them to any body shape.

Tips

For safety and comfort, use lightweight materials like EVA foam or cardboard for the sword rather than heavy plastic or wood.
Use neon blue paint that glows under blacklight if you don't want to wire actual LED lights.
Ensure the chest plate is secured with adjustable elastic straps so you can move your arms freely.

Trollhunters costume FAQ

How do I make the Trollhunters armor glow?: You can thread blue LED fairy lights or EL wire through channels in your foam armor, or simply use bright neon blue acrylic paint or glow-in-the-dark paint for a simpler, battery-free option.
What is the Amulet of Daylight made of?: In the show, it is magical metal. For a costume, you can use a 3D-printed replica, a toy version, or craft one from layers of foam and a blue LED puck light.
Is this costume suitable for kids?: Yes, kids love dressing up as Jim. A printed fabric jumpsuit with a plastic mask and toy sword is the most comfortable and practical version for trick-or-treating.

Did you know? The Amulet of Daylight features incantations written in Trollish runes, which translate to 'For the glory of Merlin, Daylight is mine to command!'