Knife Designer — Waysun Johnny Tsai
C.U.M.A. Knives

Knife Designer

I’ve used knives my entire life — for pretty much everything.

Since 2010 I’ve released over two dozen C.U.M.A. branded knives and tactical pens — from USA-made blades to officially licensed collaborations. Here’s a look at the designs and the stories behind them.

C.U.M.A. karambit by Waysun Johnny Tsai
The Work

Signature Designs

A few of the pieces I’m proudest of — each one a milestone in the C.U.M.A. story.

The First

C.U.M.A. Evolution

My first knife design — produced by TOPS Knives and 100% USA made. The blade that started it all.

Most Popular

C.U.M.A. TAK-RI & KAGE

Adapted as the official knife of the GI JOE Ninja Commando SNAKE EYES in the IDW Publishing GI JOE comic series, drawn by artist Robert Atkins.

Licensed

C.U.M.A. Protector

Became a licensed accessory for the ACTION FORCE (Valaverse) action figure line — packaged with the female military figure PANDORA.

Where It Began

C.U.M.A. RAM Tactical Pen

The first self-defense product I ever designed and manufactured — everyday carry, ready when you need it.

2 Dozen+Designs released
Since 2010Designing blades
100%USA made (Evolution)
GI JoeOfficially licensed
Made With

Manufacturing Partners

My designs are brought to life by some of the best names in the industry. Most models are available through retailers — or directly from me.

TOPS KnivesWorkTuff GearDayOne GearSmoky Mountain Knife WorksZIPPO (Licensed)
The Collection

Knives & Blades

C.U.M.A. knife lineup
C.U.M.A. folding knife
Officially Licensed

C.U.M.A. ZIPPO Lighters

I also designed a line of officially licensed ZIPPO lighters — and honestly, they turned out pretty cool.

C.U.M.A. Survival School Zippo lighters
Let’s Build Something

See Something You Like?

Most models are available through retailers or directly from me. I’m always looking to work with new companies to bring my designs to life.

Contact Me For Availability