Overview & First Impressions
The Leviathan takes its name from a sea monster and its proportions from the same idea. Tenable's B1083A4 runs a 3.9-inch blackwash D2 cleaver blade in a brown micarta frame that measures close to nine and a half inches open. This is not a discreet office folder. It is an overbuilt working knife designed by Warhawk Knives for people who want a broad, tall blade with real presence, and it delivers that without drifting into the absurd.
Build Quality & Materials
The blade is D2 tool steel, and at this size that is a deliberate choice. D2 holds a working edge through cardboard, zip ties, and landscaping waste far longer than the softer stainless common at this price, and a blackwash finish hides the scratches the work will inevitably leave. Brown micarta scales add warm, grippy texture that improves with use and stays secure when wet. As an entry into D2 steel in a large format, this is one of the more substantial options available.
Design & Craftsmanship
The cleaver profile is the defining feature. A tall, flat-ground blade with a broad belly is superb for push cuts and slicing on a board, and the squared-off tip gives you a controlled point for scoring. Dual deployment covers both preferences: a flipper tab for fast opening and a thumb hole for a slower, more deliberate draw. A liner lock secures the blade, and the handle is shaped with a forward finger groove that locks your hand in place during hard cuts.
Performance & Real-World Use
In the field the Leviathan behaves like a folding chef knife that also handles outdoor abuse. Food prep at camp, breaking down boxes, cutting rope and straps, and processing kindling are all natural tasks. The weight forward balance encourages deliberate cuts rather than flicks, which suits the design. Anyone who has carried a large Tenable knives model before will recognise the same sturdy feel here, just in a broader blade format.
Carry & Ownership Notes
The pocket clip is positioned for tip-up right-hand carry, and the knife is heavy enough that you will notice it in a light pair of trousers, so a belt pouch or a jacket pocket makes more sense for all-day carry. The blade takes a keen edge and holds it, and D2 sharpens predictably with diamond abrasives. For a large working folder with genuine cutting geometry rather than styling, this is a sensible EdcMall pick. The Tenable Leviathan B1083A4 is a knife you plan around rather than forget about, and it rewards that planning with genuinely capable cutting geometry. If you want the cleaver profile as a working tool, this trim is the one to buy because the finish will not make you flinch the first time it picks up a mark.
Who Is This For?
Buy this if you want a large, hard-working cleaver folder with excellent edge retention and a grippy natural handle. Skip it if you prefer slim, lightweight knives or need a fine piercing tip.
Final Verdict
The Leviathan B1083A4 commits fully to the overbuilt cleaver concept and executes it well. If that is the knife you want, this is a well-made and honestly priced version of it.
