
Are you ready to bring the wildest member of the Special Division 4 to life at your next convention?
Beam the Shark Fiend from Chainsaw Man is one of the most energetic and beloved characters in the series.
This DIY cosplay guide will show you how to assemble his look quickly, easily, and on a budget.
Cosplaying Beam is perfect for beginners who want a comfortable costume that still stands out in a crowd.
Let’s dive into the simple steps and pieces you need to capture his frantic, loyal shark energy.
Preparing this outfit takes very little time, making it an excellent choice for last-minute cosplay plans.
You will surely turn heads and bring smiles to fellow Chainsaw Man fans with this vibrant costume choice.
Complete Costume Breakdown
Clothing & Core Pieces
Beam has a very simple and recognizable outfit that makes him extremely comfortable to wear all day long.
The core of his look starts with a fun, shark-themed button-down shirt that matches his aquatic nature.
This shirt is lightweight and keeps you cool, which is ideal for crowded convention halls.
Pair this shirt with simple dark blue swim trunks to capture his casual, ready-to-swim character design.
Choose swim trunks with a comfortable waistband so you can move around freely during your event.
These two clothing items form the foundation of your outfit and are easy to wear in any weather.
You can find these pieces online or even at local thrift stores to save some extra money.
Using everyday clothing items ensures that your cosplay remains affordable, practical, and highly reusable.
Accessories & Details
To make your Beam cosplay instantly recognizable, you need to focus on his unique physical features and accessories.
A spiky black wig is essential to capture his chaotic hairstyle and wild, unkempt anime look.
Styling the wig with strong hold hairspray will help you get those signature sharp spikes.
Take your time defining each spike to match Beam’s crazy silhouette from the manga and anime.
Next, add a shark headband to represent his fiend form’s shark head protrusion in a cute, simple way.
Position the headband securely on your head so it stays in place when you strike energetic poses.
Finally, pop in some fake fangs to show off his sharp shark teeth whenever you smile for photos.
Select fangs that fit comfortably over your natural teeth without interfering too much with your speech.
These small details really bring the character to life and make your cosplay stand out.
Cosplay Tips
1. Style your wig before the convention using plenty of styling gel to keep the spikes sharp and durable.
2. Practice fitting your fake fangs beforehand using safe, cosmetic-grade adhesive so they stay secure while talking.
3. Keep a small bottle of wig glue or bobby pins in your bag for quick convention floor repairs.
4. Stay hydrated throughout the day, especially since swim trunks and short sleeves are great for warm summer conventions.
5. Bring a small prop like a plush shark or a Chainsaw Man poster to add more fun to your photos.
6. Wear comfortable, neutral-colored shoes since you will be walking and standing for long periods.
7. Bring a light jacket or cover-up for when the convention center air conditioning gets too cold.
Character Vibe & Styling Notes
Beam is known for his boundless enthusiasm and his intense, absolute loyalty to Lord Chainsaw.
To portray him well, practice his energetic poses, wide-eyed expressions, and excitable, fanboy-like behavior.
When posing for photos, try kneeling down or looking like you are swimming through the floor itself.
This playful posing style captures his unique devil abilities and adds dynamic action to your pictures.
You can also yell out funny lines about Lord Chainsaw to get great, dynamic action shots.
Keep your energy high and stay in character to make your cosplay experience incredibly fun and interactive.
Interacting with other Chainsaw Man cosplayers in character will make for fantastic group photoshoot opportunities.
Final Thoughts
Creating a Beam cosplay is an awesome, low-stress project that yields fantastic and highly recognizable results.
With just a few key clothing pieces and fun accessories, you can look just like the Shark Fiend.
Gather your friends, put on your costume, and get ready to run wild at your next big event.
Have fun styling your wig, fitting your fangs, and showing off your love for Chainsaw Man.
This simple build proves that you do not need a massive budget to create an amazing cosplay.
We hope this guide helps you feel confident and ready to rock your next anime convention.






