About That Human-sized Squadt Tanto Knife Proto / NKD Jack?

Not only does FERG like them automatic weapons, he's brandishing up nifty blades too! Shown here is a prototype of a Project Squadt Tanto knife - from wee bitty toy, to full human-sized mayhem-fun! Whether this be a production item is yet to be determined. The question being: to which Squadt specimen does this tanto-knife belong to?Is it from past-releases? (I do not own either, so depend on you