The Kukri is certainly an odd shaped knife. A bit unwieldy. See them at gun shows and on the net. Reproductions. But interesting to hold.
The shape of the knife has a purpose, form follows function and all that. They are made for removing heads. Quickly. They work quite well for that purpose.
You can get a good kukri from Amazon. It is manufactured in Nepal and shipped direct to you. About $53.
The thing about a kukri is that due to the curve of the blade they tend to bite in deeper on a slashing blow rather than glancing off. Combined with a general heavy construction that carries plenty of momentum and energy and you have a fierce weapon. If I had to fight with a blade rather than a firearm, I’d leave my Ka-Bar in my go bag and pull one of my kukris.