What is Mark Rober's famous Halloween costume?

Mark Rober became famous for creating a 'gaping hole in the torso' costume using two iPads connected via FaceTime, making it look like you can see right through his body.

How do you make the Mark Rober iPad costume easily?

You can make a lightweight, budget-friendly version by cutting two tablet shapes out of cardboard, drawing screens showing the 'view' through a body, and taping them to the front and back of a white shirt with fake blood around the edges.

What does Mark Rober usually wear?

His signature look is very casual: a baseball cap, a graphic t-shirt (often NASA or science-themed), an unzipped hoodie, and dark jeans.

Mark Rober

Mark Rober Costume

Channel the ultimate science YouTuber with his classic look or tech costume.

Mark Rober is a former NASA engineer and massive YouTube creator famous for his science experiments, gadgets, and creative DIY projects. Fans love dressing up as him because of his approachable, recognizable style or by recreating his viral 2011 'gaping hole' iPad costume. This guide covers his signature everyday look along with how to pull off his classic high-tech illusion.

Difficulty: Easy
Time: ~20 min
Budget: $25–80

See yourself as Mark Rober →What you need Buy the Mark Rober costume

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What you need for a Mark Rober costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Mark Rober costume — one box instead of 5 pieces.

Shop Mark Rober at Spirit ↗

CrunchLabs or NASA T-Shirt
A casual graphic tee, preferably in black, navy, or heather gray, featuring a NASA logo or his CrunchLabs brand.
DIY: Use fabric markers or a printable iron-on transfer to put a NASA or gear logo on a plain black tee.
Amazon
Red or Gray Zip-Up Hoodie
A classic, casual zip-up hoodie left unzipped over the graphic tee.
Amazon
Dark Wash Jeans
Standard straight-leg or slim-fit blue jeans in a dark wash.
DIY: Use any comfortable pair of dark jeans you already own.
Amazon
Gray or Black Baseball Cap
A simple, low-profile baseball cap worn forward, often featuring a subtle logo or left blank.
Amazon
Fake iPad/Screen Props
Two lightweight cardboard or foam board cutouts painted to look like iPads, used to recreate his famous 'gaping hole' illusion.
DIY: Cut two tablet-sized rectangles out of cardboard, paint the borders black, draw a camera lens, and print out a 'gaping hole' graphic to paste on the screens.
Amazon

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

How to put it together

1
Put on the dark wash jeans and comfortable sneakers.
2
Slip on the NASA or CrunchLabs graphic t-shirt.
3
Layer the red or gray zip-up hoodie over the shirt, leaving it fully unzipped.
4
Place the gray or black baseball cap on your head, adjusted to sit comfortably forward.
5
To reference his famous tech costume, attach one DIY cardboard iPad prop to the front of your shirt and the other to your back, aligned to look like a camera feed showing 'through' your body.

Makeup & hair

Keep hair neat and simple under the baseball cap. No makeup is required for this clean, everyday look.

Mark Rober for couples, groups, kids & more

couples: Pair up with someone dressed as a glitter bomb, a giant squirrel from his backyard obstacle courses, or a NASA astronaut.
group: Have friends dress up as fellow science creators like MythBusters or engineering colleagues.
kids: A great, simple option for kids who love science; just scale down the NASA tee, hoodie, and baseball cap.
Plus size: The casual hoodie and t-shirt combination offers a comfortable, relaxed fit for all body types.
pet: Dress your pet in a tiny squirrel costume to reference his viral backyard squirrel obstacle course videos.

Tips

Keep it comfortable by wearing worn-in sneakers, as Mark is always on his feet testing builds.
If you want to do the actual electronic iPad trick, use two real iPads running a FaceTime call between them, secured safely in a custom harness under a cut-out shirt.
Carry a clipboard, a tape measure, or a small DIY gadget prop to emphasize the 'engineer' persona.

Mark Rober costume FAQ

What is Mark Rober's famous Halloween costume?: Mark Rober became famous for creating a 'gaping hole in the torso' costume using two iPads connected via FaceTime, making it look like you can see right through his body.
How do you make the Mark Rober iPad costume easily?: You can make a lightweight, budget-friendly version by cutting two tablet shapes out of cardboard, drawing screens showing the 'view' through a body, and taping them to the front and back of a white shirt with fake blood around the edges.
What does Mark Rober usually wear?: His signature look is very casual: a baseball cap, a graphic t-shirt (often NASA or science-themed), an unzipped hoodie, and dark jeans.

Did you know? Before finding massive success on YouTube, Mark Rober spent nine years working as an engineer at NASA, including seven years working on the Curiosity rover at the Jet Propulsion Laboratory.