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Vault Boy Cosplay: At a Glance
Buy Vault Boy Costume Items:
ABOUT VAULT BOY:
1. TRACKSUIT – This blue and yellow tracksuit is absolutely perfect for this Vault Boy costume. If you like you could also use fabric paint to write your favorite vault number on the back.
2. HAIRSPRAY – Use some temporary yellow hair spray to create Vault Boy’s impossibly blonde hair.
3. T-SHIRT – The only thing the tracksuit is missing is a yellow stripe down the middle but that can be easily rectified with a plain T-shirt.
4. BOBBLEHEAD – What is your favorite S.P.E.C.I.A.L attribute? Ours is Strength, hence this cool Fallout bobblehead merch.
5. SHOES – Vault Boy is typically depicted wearing plain black dress shoes but he has also been known to wear brown and gray footwear.
Vault Boy is the main mascot of the Fallout series and he perfectly encapsulates the bling propaganda of both pre-war America and Vault-Tec.
If you don’t have time to make a full Vault Dweller costume then this is a great alternative. Requiring just 4-5 accessories, this cosplay could not be any easier to make for a last-minute Halloween party or Comic-con event.
See the rest of our Fallout Costume Collection below for more of our favorite outfit ideas and step-by-step guides!
Fallout Costume Collection
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Start with a blue tracksuit that has yellow trim, then wear a yellow T-shirt underneath to suggest Vault Boy’s bright center panel. Black shoes and swept blond hair complete the basic outfit. Keep the jacket partly open so the yellow shirt remains visible, rather than disappearing beneath a solid blue front.
Vault Boy is Fallout’s cheerful illustrated mascot, so a clean blue-and-yellow outfit and stylized blond hair suit his appearance. A Vault Dweller costume can include a numbered jumpsuit, utility gear and signs of wasteland travel. This guide uses a tracksuit to emphasize the mascot’s simple colors rather than a detailed survival outfit.
A vault number is optional for this Vault Boy interpretation. The mascot’s blue-and-yellow clothing, blond hairstyle and cheerful expression establish the reference without identifying a particular vault. If you add a number for a personalized outfit, use removable yellow fabric pieces or a suitable fabric paint so the edges stay clear.
Brush the front of your hair into a rounded side sweep, keeping the shape neat and slightly exaggerated. Temporary yellow color or a blond wig can make the effect stronger. Work on the silhouette first, since a defined wave near the forehead suggests Vault Boy more clearly than color alone.
Nuka Cola Girl makes a natural partner for Vault Boy because both costumes draw on Fallout’s bright promotional imagery. Add Lucy MacLean for a Vault Dweller connection, or the Ghoul for a strong wasteland contrast. A clean mascot outfit stands out particularly well beside costumes with weathered clothing and practical gear.
Neither accessory is necessary for Vault Boy’s mascot look. A bobblehead can be a fun photo detail, while a Pip-Boy leans toward a playable Vault Dweller interpretation. The blue-and-yellow outfit and swept blond hair are enough for a simple costume; an exaggerated smile and thumbs-up pose can finish photographs without extra purchases.