Diego Hargreeves, also known as Number Two, is one of the most exciting characters to cosplay from The Umbrella Academy.
His dark, tactical aesthetic looks incredibly cool and is surprisingly simple for beginners to put together.
In this guide, we break down his signature vigilante outfit step by step so you can recreate his iconic look.
You do not need any advanced crafting skills to build this awesome, budget-friendly costume.
Most of these tactical items are readily available and can even be reused for other future cosplays.
Complete Costume Breakdown
Clothing & Core Pieces
The foundation of Diego’s costume starts with a solid black compression shirt.
Look for a snug, long-sleeve athletic shirt that fits your body comfortably.
This tight top gives you that athletic, stealthy vigilante silhouette seen in the show.
For the bottoms, a pair of rugged black motorcycle pants works perfectly.
These pants have built-in texture and panels that mimic Diego’s screen-accurate leather pants.
They are also durable enough to keep you comfortable during long hours at a convention.
Make sure they have a slightly fitted look to complete the tactical style.
Finish the core outfit with a pair of sturdy black jungle combat boots.
These boots provide excellent ankle support and look great with the motorcycle pants tucked in.
Choose a pair that is broken in so your feet do not hurt while walking.
Accessories & Details
Diego is famous for his throwing knives, making the tactical harness a critical accessory.
This harness goes over your shoulders and holds his throwing weapons in place.
You can attach a rubber training knife with a scabbard to the harness.
Always use a rubber training knife to stay safe and follow convention prop rules.
A black leg holster adds another layer of detail to his combat-ready appearance.
Strap the leg holster to your thigh and secure it over your pants.
To protect your arms, slide a black arm guard onto your forearm.
These guards give the impression of light armor and match Diego’s combative personality.
Complete the weapon accessories with tactical knuckle gloves to protect your hands.
Choose fingerless or full gloves that allow you to hold props easily.
Cosplay Tips
When you are attending busy conventions, always check the local prop weapons policy beforehand.
Ensure that all your rubber training knives are clearly marked as fake props for security.
Secure your harness and holsters tightly so they do not slip while walking around.
Use safety pins or fabric tape to keep loose straps from dangling awkwardly.
Drink plenty of water since the all-black tactical gear can get warm quickly.
Take breaks to sit down and adjust your gear if it feels uncomfortable.
Bring a small bag to carry your personal items since tactical pants have limited pockets.
Keep a backup repair kit with safety pins and tape in your bag.
Character Vibe & Styling Notes
Diego is well known for his intense, brooding attitude and rebellious vigilante nature.
Practice a confident, determined stance to match his signature look in photos.
His hairstyle is typically short and slightly messy, matching his rugged and active lifestyle.
You can style your own hair with textured wax or get a short black wig.
Add a light layer of dark eyeshadow under your eyes to create a tired, gritty appearance.
Keep your facial expression serious and alert to channel his protective, brooding vigilante persona.
Diego often looks ready for a fight, so practice posing with your hands near your knives.
Walking with purpose and confidence will make your entire character portrayal much more convincing.
Final Thoughts
Dressing up as Diego Hargreeves is a fun and rewarding experience for any cosplay beginner.
This dark tactical outfit is comfortable, highly recognizable, and very easy to assemble.
Gather all your gear, practice your best poses, and get ready to join the Academy.
Share your completed costume with the online cosplay community and enjoy your next big event.
