Now I say this knowing full well this wont be the worst sword. Ya, the guard would likely gut you if you swung it, and the square grip would likely turn easily and tear at your hands. And ya, the only thing you could really do with it is stab, which it would be too heavy and awkward to do well(ya, the two-handed stab!)…but it could probably club pretty well and that point could tear at you while you were being clubbed, particularly when it almost misses!
It would take years to find the WORST one, but I believe that the very worst swords are not even fictional – they are “fantasy swords” with lots of flanges and stupid decorations made in the real world for dorks who think they will look bad-ass waving them around in their sweaty Wolverine T-shirts. I will now dig some up at random.
These days many are tie-ins to franchises, like this one:
Or mere cheapo allusions to franchises, like this one:
Scarlet and black is a common color theme, firmly anchoring these in 80s dork culture: