Doom Slayer Costume
Rip and tear through Halloween with the ultimate sci-fi armor look.
The Doom Slayer (also known as Doomguy) is the iconic, demon-slaying protagonist of the legendary Doom video game franchise. Fans choose this costume to embody pure, unstoppable power, making it a massive hit at gaming conventions and Halloween parties. The signature look consists of the high-tech green Praetor armor suit, a full-head visor helmet, and heavy sci-fi weaponry.
- Difficulty
- Advanced
- Time
- ~180 min
- Budget
- $150–600
Try it on
See yourself as Doom Slayer
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.
Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.
What you need for a Doom Slayer costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Doom Slayer costume — one box instead of 6 pieces.
Doom Slayer Helmet
A full-head green resin or plastic helmet with a translucent blue or dark visor.
DIY: Paint a motorcycle helmet green and install a blue tinted visor sheet.
Green Chest Armor
Heavy-duty green chest plate with shoulder guards, featuring mechanical and battle-worn details.
DIY: Cut and shape green EVA foam sheets, then paint them with metallic silver scuffs.
Arm Gauntlets with Blade
Matching green forearm guards, featuring the retractable Doomblade on the left arm.
DIY: Attach a painted foam blade to a sturdy green forearm guard.
Dark Under-Suit
A black or dark gray ribbed compression shirt and matching pants to wear beneath the armor plates.
Combat Boots
Heavy-duty black or dark green tactical combat boots with armor plates attached to the shins.
DIY: Strap painted green foam shin guards over regular black boots.
Super Shotgun Prop
A double-barreled break-action shotgun prop, ideally featuring the meat hook attachment.
DIY: Craft a double-barrel design using PVC pipes painted silver and a wooden toy stock.
Rather not assemble it? See ready-made Doom Slayer costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the black ribbed compression shirt and pants as your base layer.
- 2
Secure the thigh and shin armor plates over your pants using adjustable straps.
- 3
Lace up your tactical combat boots, ensuring the shin guards sit flush against the top of the boots.
- 4
Strap on the heavy chest and back armor plates, adjusting the shoulder guards for mobility.
- 5
Slide on the forearm gauntlets, ensuring the left-arm Doomblade is securely positioned.
- 6
Equip your weapon props, such as the Super Shotgun, using a back sling if available.
- 7
Put on the full-head Doom Slayer helmet and adjust the interior padding for a secure fit.
Makeup & hair
No makeup or hair styling is required, as the entire head is concealed inside the iconic full-coverage Praetor helmet.
Doom Slayer for couples, groups, kids & more
- couples
- Pair up with Isabelle from Animal Crossing for a viral, fan-favorite crossover duo.
- group
- Team up with classic Doom demons like an Imp, Cacodemon, or a Marauder.
- kids
- A simplified version using a printed fabric jumpsuit and a lightweight plastic mask.
- Plus size
- Use adjustable nylon webbing straps on EVA foam armor plates to customize the fit to any body type.
- pet
- Dress your dog in a small green foam chest plate to look like a mini-slayer companion.
Tips
- Add a small battery-operated fan inside the helmet to prevent the visor from fogging up during events.
- Use metallic silver acrylic paint and a dry brush technique on the edges of the armor to create realistic battle-worn scratches.
- Ensure your armor joints are secured with flexible straps so you can sit down and move comfortably.
- Carry a black marker or extra zip ties in a pocket for quick on-the-go armor repairs.
Doom Slayer costume FAQ
- What is the Doom Slayer's suit called?
- The Doom Slayer wears the Praetor Suit, a high-tech, near-impervious set of armor forged specifically to withstand the hazards of Hell.
- How do you make DIY Doom Slayer armor?
- Most DIY cosplayers use EVA foam sheets, which are cut using templates, shaped with a heat gun, glued together, and painted with acrylics.
- Is the Doom Slayer costume hard to wear?
- It can be warm and heavy due to the full-body plates and enclosed helmet, so taking regular breaks to cool down is highly recommended.
Did you know? The Doom Slayer's design in 'Doom Eternal' features an exposed bicep, which was a deliberate nod to the classic 1993 original box art design.